Relevant bibliographies by topics / Zinc Magnesium Oxide

Academic literature on the topic 'Zinc Magnesium Oxide'

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Published: 8 June 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Journal articles on the topic "Zinc Magnesium Oxide":

1

T.Ch.Taghiyeva, T. Ch Taghiyeva. "X-RAY DIFFRACTION STUDY OF BINARY ZINC-OXIDE CATALYSTS." Azerbaijan Journal of Chemical News 04, no. 01 (May 30, 2022): 60–64. http://dx.doi.org/10.32010/ajcn5012022-60.

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The phase composition of binary zinc-containing catalysts was studied by X-ray diffraction. It was found that the formation of two phases of the initial oxides is observed in all the studied catalytic systems. So, samples of the Zr-Zn-O catalytic system consist of phases of zirconium and zinc oxides, samples of the Ce-Zn-O catalytic system consist of phases of cerium and zinc oxides, while samples of the Mg-Zn-O catalytic system consist of phases of magnesium and zinc oxides. It has been established that the crystallinity of binary zinc-containing catalysts varies in the range from 70% to 89%. Keywords: X-ray phase analysis, binary catalysts, zinc oxide, cerium oxide, zirconium oxide, magnesium oxide
2

Lu, Dongzhu, Yanliang Huang, Jizhou Duan, and Baorong Hou. "A Zinc-Rich Coating Fabricated on a Magnesium Alloy by Oxide Reduction." Coatings 9, no. 4 (April 25, 2019): 278. http://dx.doi.org/10.3390/coatings9040278.

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The corrosion resistance of magnesium alloys could be enhanced by covering metallic coatings on the surface. The zinc-rich coating is one of these metallic coatings. To fabricate a zinc-rich coating on magnesium alloys, the substrate should be pretreated carefully, and a protective atmosphere is usually required. In this research, a zinc-rich coating was successfully fabricated on the AZ91D magnesium alloy in air by a diffusion alloying method, with zinc oxide as the zinc source. At the same time, the pretreatment of the magnesium alloy matrix was greatly simplified. The as-diffusion-alloyed zinc-rich intermetallic layer was investigated, utilizing SEM, EDS, and XRD, respectively. It is inferred that zinc oxide was reduced into Zn atoms by the active Mg atoms, and the Mg atoms were coming from the magnesium alloy matrix. Then the Zn atoms passed through the oxide film and formed an intermetallic layer on the magnesium alloy surface. Thus, taking advantage of the activity of Mg atoms, magnesium alloys could be surface alloyed with oxides.
3

Hsu, Yu-Ting, Che-Chi Lee, Wen-How Lan, Kai-Feng Huang, Kuo-Jen Chang, Jia-Ching Lin, Shao-Yi Lee, Wen-Jen Lin, Mu-Chun Wang, and Chien-Jung Huang. "Thickness Study of Er-Doped Magnesium Zinc Oxide Diode by Spray Pyrolysis." Crystals 8, no. 12 (December 6, 2018): 454. http://dx.doi.org/10.3390/cryst8120454.

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Erbium-doped magnesium zinc oxides were prepared through spray pyrolysis deposition at 450 °C with an aqueous solution containing magnesium nitrate, zinc acetate, erbium acetate, and indium nitrate precursors. Diodes with different erbium-doped magnesium zinc oxide thicknesses were fabricated. The effect of erbium-doped magnesium zinc oxide was investigated. The crystalline structure and surface morphology were analyzed using X-ray diffraction and scanning electron microscopy. The films exhibited a zinc oxide structure, with (002), (101), and (102) planes and tiny rods in a mixed hexagonal flakes surface morphology. With the photoluminescence analyses, defect states were identified. The diodes were fabricated via a metallization process in which the top contact was Au and the bottom contact was In. The current–voltage characteristics of these diodes were characterized. The structure resistance increased with the increase in erbium-doped magnesium zinc oxide thickness. With a reverse bias in excess of 8 V, the light spectrum, with two distinct green light emissions at wavelengths of 532 nm and 553 nm, was observed. The light intensity that resulted when using a different operation current of the diodes was investigated. The diode with an erbium-doped magnesium zinc oxide thickness of 230 nm shows high light intensity with an operational current of 80 mA. The emission spectrum with different injection currents for the diodes was characterized and the mechanism is discussed.
4

Fayomi, Ojo Sunday Issac, Itopa Godwin Akande, and C. Ofo. "Investigation of Corrosion Resistance and Microstructural Performance of Zn-MgO-WB Composite Coating on Mild Steel." Key Engineering Materials 886 (May 2021): 159–67. http://dx.doi.org/10.4028/www.scientific.net/kem.886.159.

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This Paper investigated the corrosion resistance and microstructural performance of zinc-magnesium oxide-tungsten boride (Zn-MgO-WB) composite coating on mild steel. Tungsten boride as an additive was co-deposited with zinc-magnesium oxide on mild steel via electrolytic deposition. The zinc-magnesium oxide and zinc-magnesium oxide-tungsten boride composite coatings were fabricated at the voltage of 0.6 and 0.8 V for 15 minutes and 45 °C. The effects of the deposits on the corrosion properties were examined. The corrosion behaviour was studied using linear polarization and weight loss method in 3.5% NaCl simulated environment. From the results obtained, it is evident that a decrease in applied potential influences the deposition of the coatings. The alloys with tungsten boride in their bath mixture performed better than those without. The zinc-magnesium oxide-tungsten boride (0.8 V) composite coated sample exhibits the least corrosion rate (Cr) of 0.0010482 mm/year and the microstructural examination of the sample via scanning electron microscope (SEM) unveiled homogeneous dispersion of particles and smooth morphology. The smooth morphology, defect-free surface, coupled with the uniform dispersion of the zinc-magnesium oxide-tungsten boride nanoparticles on the steel surface could have been responsible for high corrosion resistance performance of the coating in the simulated 3.5% NaCl medium. More so, the energy dispersive spectroscopy (EDS) revealed the presence of zinc, magnesium oxide, tungsten boride particles.
5

Guzmán, Manuel, Berta Vega, Núria Agulló, Ulrich Giese, and Salvador Borrós. "ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 1." Rubber Chemistry and Technology 85, no. 1 (March 1, 2012): 38–55. http://dx.doi.org/10.5254/1.3672428.

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Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as activator, and consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO on the vulcanization of natural rubber has been investigated. In Part 2, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in Part 1.
6

Guzmán, Manuel, Berta Vega, Núria Agulló, and Salvador Borrós. "ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 2." Rubber Chemistry and Technology 85, no. 1 (March 1, 2012): 56–67. http://dx.doi.org/10.5254/1.3672429.

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Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as an activator and, consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO in the vulcanization of natural rubber has been investigated. In Part 2 of the study, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in the first part.
7

Javadi, Seyyed Mohammad. "Applications of ZnO and MgO Nanoparticles in Reducing Zinc Pollution Level in Rubber Manufacturing Processes: A Review." Current Biochemical Engineering 6, no. 2 (July 25, 2020): 103–7. http://dx.doi.org/10.2174/2212711906666200224105931.

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Background: Rubber vulcanization is a consolidated chemical process to enhance the mechanical properties of the polymeric material by sulfur crosslinking of the polymer chains, such as rubber. Vulcanization Activators are important rubber processing additives that activate sulfur cure and improve the efficiency of sulfur-based cure systems. The most common activator is zinc fatty acid ester that is often formed in-situ by the reaction of fatty acid with zinc oxide. Although zinc is one of the less harmful heavy metals, according to European Council Directive 2004/73/EC, the reduction of zinc level in the environment has become an important task because of its toxic effect on aquatic organisms. : The current study reviews the research achievements in the field of reducing the consumption of micronutrients of ZnO particles based on the use of nanoparticles instead of them in the polymer industry. Among the proposed methods, due to the less environmental effects of magnesium oxide, the use of MgO nanoparticles instead of zinc oxide has also achieved good results. Objective: The aim of this paper is considering suggested different methods on the reduction of using ZnO particles in related industries, the use of ZnO nanoparticles has had better results than its particles. In addition, due to the less environmental effects of magnesium oxide, magnesium oxide nanoparticles can be used instead of micronutrients of zinc oxide. Overall, the results of various investigations show that reducing the diameter of the zinc oxide particles reduces the amount required for curing the rubber and thus reduces its toxic effects. Also, the use of magnesium oxide nanoparticles instead of zinc oxide in different concentrations is investigated.
8

Francis, Santhanam, Ramachandran Saravanan, and Mohammed Açıkgöz. "Solubility Limit of Sol–Gel Grown Nano Zn1-xMgxO Through Charge Density Distribution." Zeitschrift für Naturforschung A 68, no. 10-11 (November 1, 2013): 668–76. http://dx.doi.org/10.5560/zna.2013-0043.

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The mixed oxides Zn1-xMgxO were prepared as polycrystalline powders with various compositions (x = 0:02, 0.04, 0.05, and 0.10) using sol-gel technique. X-ray diffractometer (XRD) was used to characterize the powders for structural and electronic properties. X-ray diffraction analysis reveals that all the prepared samples exhibit the single wurtzite phase of zinc oxide (ZnO), and magnesiumdoping does not induce any secondary phase in the samples. The Bragg peak positions in the XRD patterns are found to be shifted towards higher 2q values with more addition of magnesium in the zinc oxide lattice. Magnesium addition in the zinc oxide lattice is found to enhance the mid bond electron density distribution up to x = 0:05 and then decrease for x = 0:10. Evidence of host lattice as well as interstitial addition of Mg2+ ions has been realized for x = 0:10, through electron density analysis.
9

Sarhan, Mohamed H., Shatha G. Felemban, Walla Alelwani, Hesham M. Sharaf, Yasmin A. Abd El-Latif, Elsayed Elgazzar, Ahmad M. Kandil, Guillermo Tellez-Isaias, and Aya A. Mohamed. "Zinc Oxide and Magnesium-Doped Zinc Oxide Nanoparticles Ameliorate Murine Chronic Toxoplasmosis." Pharmaceuticals 17, no. 1 (January 15, 2024): 113. http://dx.doi.org/10.3390/ph17010113.

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Toxoplasma gondii causes a global parasitic disease. Therapeutic options for eradicating toxoplasmosis are limited. In this study, ZnO and Mg-doped ZnO NPs were prepared, and their structural and morphological chrematistics were investigated. The XRD pattern revealed that Mg-doped ZnO NPs have weak crystallinity and a small crystallite size. FTIR and XPS analyses confirmed the integration of Mg ions into the ZnO framework, producing the high-purity Mg-doped ZnO nanocomposite. TEM micrographs determined the particle size of un-doped ZnO in the range of 29 nm, reduced to 23 nm with Mg2+ replacements. ZnO and Mg-doped ZnO NPs significantly decreased the number of brain cysts (p < 0.05) by 29.30% and 35.08%, respectively, compared to the infected untreated group. The administration of ZnO and Mg-doped ZnO NPs revealed a marked histopathological improvement in the brain, liver, and spleen. Furthermore, ZnO and Mg-doped ZnO NPs reduced P53 expression in the cerebral tissue while inducing CD31 expression, which indicated a protective effect against the infection-induced apoptosis and the restoration of balance between free radicals and antioxidant defense activity. In conclusion, the study proved these nanoparticles have antiparasitic, antiapoptotic, and angiogenetic effects. Being nontoxic compounds, these nanoparticles could be promising adjuvants in treating chronic toxoplasmosis.
10

Tai, I.-Po, Kuo-Chin Hsu, I.-Tseng Tang, Te-Hua Fang, Tsung-Chieh Cheng, Wei-Hao Wang, Mustufa Ali Ansari, and Chi-Jen Shi. "Characteristics and Application of Zinc Oxide/Magnesium Oxide Hybrids." Sensors and Materials 35, no. 3 (March 31, 2023): 1069. http://dx.doi.org/10.18494/sam4233.

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Journal articles Dissertations / Theses

Dissertations / Theses on the topic "Zinc Magnesium Oxide":

1

Hlaing, Oo Win Maw. "Infrared spectroscopy of zinc oxide and magnesium nanostructures." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Fall2007/w_hlaingoo_121107.pdf.

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2

Bernard, Sheldon Ainsworth. "Influence of silicon dioxide, magnesium oxide and zinc oxide on resorbable tricalcium phosphate based bioceramics." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Fall2005/s%5Fbernard%5F083005.pdf.

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3

Felker, Daniel L. "Studies of oxide-free phosphates film surfaces on magnesium, zinc, and manganese by X-ray photoelectron spectroscopy /." Search for this dissertation online, 2005. http://wwwlib.umi.com/cr/ksu/main.

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4

Bose, Sourav. "Development and Study of Earth-Abundant Oxide Based Thin Films for Solar Cells by Ultrasonic Spray Pyrolysis : From Unbeknownst to Erudite Processes." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0131.

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Dans ce travail de recherche, sont présentés les résultats de l'élaboration de couches minces d'oxydes à base d'éléments abondants par la technique de spray pyrolyse ultrasonique. Trois matériaux constituant les briques de base de la cellule solaire « tout oxyde » ont été développés : l'oxyde de zinc (ZnO) comme couche fenêtre ; l'oxyde de zinc et de magnésium (ZnMgO) comme couche tampon et l'oxyde de cuivre (Cu2O) comme couche absorbante. Un plan d'expériences précis a été mis en place pour chaque type d'élaboration afin de comprendre l'effet des paramètres d'élaboration sur les propriétés des films. Des caractérisations optiques, structurelles, morphologiques et électriques ont été utilisées pour étudier les propriétés du film et les résultats discutés et analysés en détail. Des films minces de ZnO avec une transparence élevée dans une large gamme d'épaisseurs ont été obtenus. Le ZnMgO a été élaboré avec une phase monocristalline et une transparence élevée. La limite de miscibilité du magnésium (près de 30 % dans notre cas) est supérieure à celle habituellement obtenue avec les méthodes d'élaboration sans vide. L'élaboration de l'absorbeur Cu2O a été optimisée avec un contrôle efficace de la température d'élaboration et de la concentration d'un nouvel agent réducteur (D-sorbitol). Pour élargir les perspectives de ce travail, deux autres matériaux, ZnAlO et ZnAlMgO, ont été élaborés. Nous avons ainsi mis en évidence le fait qu'avec de faibles concentrations d'aluminium (jusqu'à 2 %) et de magnésium (jusqu'à 7 %), les propriétés optiques, électriques et structurales des films de ZnAlO pouvaient être modulées pour une utilisation en tant que couche fenêtre ou TCO dans les cellules solaires « tout-oxyde ». De plus, les simulations réalisées à l'aide des logiciels Silvaco Atlas® et Solis démontrent également le potentiel de ces films pour les cellules solaires « tout-oxyde »
The results on elaboration of environmentally compatible, earth-abundant metal oxide thin films using the technique of ultrasonic spray pyrolysis are presented. Three essential materials are developed for the purpose of realization of an “all-oxide” solar cell device: Zinc oxide (ZnO) as window layer; zinc magnesium oxide (ZnMgO) as a buffer layer and cuprous oxide (Cu2O) used as an absorber layer. Comprehensive design of experiments was set up for the elaboration of each material. Highly transparent ZnO was elaborated in wide range of thickness with high crystalline qualities with specific elaboration temperature with a precise control on the concentration of the precursors. ZnMgO was elaborated by varying the molar compositions of the magnesium precursor in the precursor solution. Up to nearly 30 % of Mg, the ZnMgO films exhibited single crystalline phase with high transparencies. High-absorbing Cu 2 O elaboration was optimized with effective control on the elaboration temperature and the concentration of a new reducing agent (D-sorbitol). To expand the horizon of efficiency of our elaboration process, two more materials, ZnAlO and ZnAlMgO, were elaborated. It was found that the optical, electrical, and structural properties of the ZnAlO films could be modulated for use in “all-oxide” solar cells by varying magnesium (up to 7 mol%) and aluminum (up to 2 %). The bandgap energies and the electrical properties of the films were modulated with the co-doping so that they can be integrated as window/top-contact/buffer layers in “all-oxide” solar cells. Additionally, simulations performed using Silvaco Atlas® and Solis also demonstrates the applicability of these films for “all-oxide” solar cells
5

Bittau, Francesco. "Analysis and optimisation of window layers for thin film CDTE solar cells." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/32642.

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The work presented in this thesis focuses on the investigation and improvement of the window stack of layers for thin film CdTe solar cells fabricated in the Center for Renewable Energy Systems Technology (CREST) laboratories. In particular the aim was to change the standard structure including TCO, high resistive transparent (HRT)layer and CdS which is limited by the low transparency of the CdS layer, to a better performing one. The first result chapter of the thesis describes the study of ZnO HRT layers. ZnO thin films were deposited by radio frequency (RF) magnetron sputtering with different structural, optical and electrical properties which were characterized by X-ray diffraction, electron microscopy, spectrophotometry, Hall Effect method and 4-point probe. ZnO films were then incorporated in CdTe solar cells with the structure: FTO/ZnO/CdS/CdTe/Au back contact and the performance of these devices were compared with the film properties to single out trends and identify optimal film characteristics. By varying the deposition pressure of ZnO films, it was possible to increase their transparency and significantly increase their resistivity. While better transparency positively affected the solar cell current density output and efficiency, the resistivity of ZnO films did not show any clear impact on device efficiency. By increasing the deposition temperature the ZnO film grain size was increased. Increased FF was observed in devices incorporating ZnO layers with bigger grains, although this gain was partially counterbalanced by the Voc degradation, leading to a limited efficiency improvement. Finally the addition of oxygen had the main effect of increasing the resistivity of ZnO films, similarly to what happened with the increase of the sputtering pressure. In this case however, an improvement of FF, Jsc and efficiency was observed, especially at an O2/Ar ratio of 1%. By simulating the solar cells behavior with SCAPS-1D, it was found that these performance change can be explained by the variation of interface properties, precisely the amount of interface defects, rather than by bulk properties. The study presented in the second result chapter focuses on magnesium-doped zinc oxide (MZO) and the variation of its energy band structure. MZO was initially used as the HRT layer within a solar cell structure: FTO/MZO/CdS/CdTe/Au back contact. Sputtering MZO films with a target containing MgO 11 weight% and ZnO 89 weight% allowed for and increased band gap from 3.3 eV of intrinsic ZnO to 3.65 eV for MZO deposited at room temperature. Increasing the superstrate deposition temperature allowed for a further band gap increase up to 3.95 eV at 400 °C due mainly to an conduction band minimum upward shift. It was highlighted the importance to create a positive conduction band offset with the MZO layer conduction band slightly above the CdS conduction band, with an optimum found in this case to be 0.3 eV (efficiency 10.6 %). By creating a positive conduction band offset all the performance parameters (Voc, FF, Jsc, efficiency) significantly increased. One of the reasons for this improvement was found to be a diminished interface recombination due to a more ideal MZO/CdS band alignment. In the second part of this investigation the MZO was used as a replacement for the CdS in a simplified structure: FTO/MZO/CdTe/Au back contact. The concepts used to optimise the performance of these devices also involved tuning the conduction band alignment between MZO/CdTe and efficiencies of 12.5 % were achieved with a at conduction band offset. The efficiency increase was achieved mainly thanks to a better transparency of the MZO layer and a higher Jsc output, compared to devices using a CdS buffer layer. The MZO buffers have been tested in combination with different TCOs. Results are presented in the third result chapter and showed that AZO is a good alternative to FTO working effectively in combination with MZO. AZO/MZO efficiency thin film CdTe solar cells (12.6%, compared to 12.5% with FTO). It was found that increasing the IR transparency of the TCOs leads to a potentially higher Jsc. Achieving a better transparency was obtained by using TCOs with high mobility and lower carrier concentration (AZO and ITiO) and also by using a boro-aluminosilicate glass with low iron content. ITiO yielded the best opto-electrical properties among all the TCO materials. Devices incorporating ITiO however, showed lower performance then those using FTO and AZO. ITO/MZO windows also yielded poor performance. In addition, the ITO films deposited had a high carrier concentration leading to a high NIR absorption by plasma resonance and resulted not ideal for application in thin film CdTe PV.
6

Frenzel, Peter, Andrea Preuß, Jörn Bankwitz, Colin Georgi, Fabian Ganss, Lutz Mertens, Stefan E. Schulz, Olav Hellwig, Michael Mehring, and Heinrich Lang. "Synthesis of Mg and Zn diolates and their use in metal oxide deposition." Royal Society of Chemistry, 2019. https://monarch.qucosa.de/id/qucosa%3A33722.

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The synthesis of complexes [M(OCHMeCH2NMeCH2)2] (5, M = Mg; 7, M = Zn) is described. Treatment of MeHNCH2CH2NMeH (1) with 2-methyloxirane (2) gave diol (HOCHMeCH2NMeCH2)2 (3), which upon reaction with equimolar amounts of MR2 (4, M = Mg, R = Bu; 6, M = Zn, R = Et) gave 5 and 7. The thermal behavior and vapor pressure of 5 and 7 were investigated to show whether they are suited as CVD (= chemical vapor deposition) and/or spin-coating precursors for MgO or ZnO layer formation. Thermogravimetric (TG) studies revealed that 5 and 7 decompose between 80–530 °C forming MgO and ZnO as evidenced by PXRD studies. In addition, TG-MS-coupled experiments were carried out with 7 proving that decomposition occurs by M–O, C–O, C–N and C–C bond cleavages, as evidenced from the detection of fragments such as CH4N+, C2H4N+, C2H5N+, CH2O+, C2H2O+ and C2H3O+. The vapor pressure of 7 was measured at 10.4 mbar at 160 °C, while 5 is non-volatile. The layers obtained by CVD are dense and conformal with a somewhat granulated surface morphology as evidenced by SEM studies. In addition, spin–coating experiments using 5 and 7 as precursors were applied. The corresponding MO layer thicknesses are between 7–140 nm (CVD) or 80 nm and 65 nm (5, 7; spin-coating). EDX and XPS measurements confirm the formation of MgO and ZnO films, however, containing 12–24 mol% (CVD) or 5–9 mol% (spin-coating) carbon. GIXRD studies verify the crystalline character of the deposited layers obtained by CVD and the spin-coating processes.
7

Abbali, Zineb. "Etude de la cristallisation de ferrites spinelles dans des verres borates." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376110731.

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8

"Formation of MgO nanorods by displacement reactions between Mg and ZnO." 2004. http://library.cuhk.edu.hk/record=b5892021.

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Abstract:
Yau Man Yan Eric = 鎂和氧化鋅反應製備氧化鎂納米棒 / 游文仁.
Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.
Includes bibliographical references.
Text in English; abstracts in English and Chinese.
Yau Man Yan Eric = Mei he yang hua xin fan ying zhi bei yang hua mei na mi bang / You Wenren.
Acknowledgement --- p.i
Abstract --- p.ii
摘要 --- p.iii
Table of contents --- p.iv
List of tables --- p.viii
List of figures --- p.ix
Chapter Chapter 1 --- Introduction
Chapter 1.1 --- Nanostructured materials --- p.1-1
Chapter 1.2 --- Application of nano-materials --- p.1-1
Chapter 1.3 --- Current development of nano-materials --- p.1-2
Chapter 1.4 --- Synthesis of nano-materials --- p.1-2
Chapter 1.4.1 --- Physical methods --- p.1-3
Chapter 1.4.1.1 --- Physical vapor deposition --- p.1-3
Chapter 1.4.1.2 --- Arc-discharge process --- p.1-3
Chapter 1.4.1.3 --- Laser ablation --- p.1-4
Chapter 1.4.2 --- Chemical methods --- p.1-4
Chapter 1.4.2.1 --- Chemical vapor deposition --- p.1-4
Chapter 1.4.2.2 --- Metal-organic chemical vapor deposition (MOCVD) --- p.1-4
Chapter 1.4.2.3 --- Solgel method --- p.1-5
Chapter 1.5 --- Study on growth mechanism of nano-materials --- p.1-5
Chapter 1.5.1 --- Vapor-liquid-solid (VLS) mechanism --- p.1-5
Chapter 1.5.2 --- Vapor-solid (VS) mechanism --- p.1-6
Chapter 1.6 --- Applications of Magnesium Oxide (MgO) materials --- p.1-7
Chapter 1.7 --- Previous works on MgO nanostructures --- p.1-8
Chapter 1.7.1 --- Network like MgO nanobelts --- p.1-8
Chapter 1.7.2 --- Decorated MgO crystalline fibers --- p.1-9
Chapter 1.7.3 --- Mg2Zn11 - MgO belt-like nanocables --- p.1-9
Chapter 1.7.4 --- MgO nanowires with uniform diameter distribution --- p.1-10
Chapter 1.7.5 --- Aligned MgO nanorods on MgO (100) substrates --- p.1-11
Chapter 1.8 --- Objectives and approaches of this project --- p.1-12
Chapter 1.8.1 --- Addition of sodium chloride (NaCl) --- p.1-13
Chapter 1.9 --- Thesis Layout --- p.1-13
Chapter 1.10 --- References --- p.1-15
Chapter Chapter 2 --- Methodology and Instrumentation
Chapter 2.1 --- Introduction --- p.2-1
Chapter 2.2 --- Powder Metallurgy --- p.2-1
Chapter 2.3 --- Sample fabrication --- p.2-1
Chapter 2.3.1 --- Starting materials --- p.2-1
Chapter 2.3.2 --- Cold pressing --- p.2-2
Chapter 2.3.2.1 --- Single pellet method --- p.2-2
Chapter 2.3.2.2 --- Double pellet method --- p.2-3
Chapter 2.3.3 --- Argon tube furnace sintering --- p.2-3
Chapter 2.4 --- Study of fabrication parameters --- p.2-4
Chapter 2.4.1 --- Heat treatment temperature --- p.2-4
Chapter 2.4.2 --- NaCl content in sample --- p.2-4
Chapter 2.4.3 --- Duration of heat treatment --- p.2-5
Chapter 2.5 --- Control Experiments --- p.2-5
Chapter 2.5.1 --- Effect of addition of NaCl --- p.2-5
Chapter 2.5.2 --- Effect of residual oxygen --- p.2-5
Chapter 2.5.3 --- Geometrical effect of experimental setup --- p.2-6
Chapter 2.5.3.1 --- Compressed double pellet method --- p.2-6
Chapter 2.5.3.2 --- Powder on Magnesium pellet method --- p.2-6
Chapter 2.5.3.3 --- Single pellet method --- p.2-7
Chapter 2.6 --- Characterization Methods --- p.2-7
Chapter 2.6.1 --- Thermal analysis - Differential thermal analyzer (DTA) --- p.2-7
Chapter 2.6.2 --- Structural analysis --- p.2-7
Chapter 2.6.2.1 --- Scanning electron microscopy (SEM) --- p.2-7
Chapter 2.6.2.2 --- Transmission electron microscopy (TEM) --- p.2-8
Chapter 2.6.3 --- Phases determination - X-ray powder diffractometry (XRD) --- p.2-8
Chapter 2.7 --- References --- p.2-9
Chapter Chapter 3 --- Results of Mg-ZnO-NaCl System
Chapter 3.1 --- Introduction --- p.3-1
Chapter 3.2 --- Results of thermal analysis --- p.3-1
Chapter 3.2.1 --- Chemical reactions --- p.3-1
Chapter 3.2.2 --- DTA results --- p.3-2
Chapter 3.3 --- Variation of heat treatment temperature --- p.3-3
Chapter 3.3.1 --- XRD pattern --- p.3-3
Chapter 3.3.2 --- SEM images --- p.3-4
Chapter 3.4 --- Variation of NaCl content --- p.3-5
Chapter 3.4.1 --- TEM analysis --- p.3-5
Chapter 3.5 --- Variation of duration of heat treatment --- p.3-6
Chapter 3.6 --- Additional findings --- p.3-7
Chapter 3.7 --- Discussions --- p.3-7
Chapter 3.8 --- References --- p.3-10
Chapter Chapter 4 --- Results of Control Experiments
Chapter 4.1 --- Introduction --- p.4-1
Chapter 4.2 --- The study of Mg-ZnO system --- p.4-1
Chapter 4.3 --- The study of residual oxygen effect --- p.4-2
Chapter 4.4 --- The study of geometrical effect of experiment setup --- p.4-2
Chapter 4.5 --- Discussions --- p.4-3
Chapter 4.5.1 --- Effect of addition of NaCl --- p.4-3
Chapter 4.5.2 --- Effect of residual oxygen --- p.4-3
Chapter 4.5.3 --- Role of ZnO --- p.4-4
Chapter 4.5.4 --- Growth model --- p.4-4
Chapter 4.6 --- References --- p.4-7
Chapter Chapter 5 --- Conclusions and Further Studies
Chapter 5.1 --- Conclusion --- p.5-1
Chapter 5.2 --- Further studies --- p.5-2
Chapter 5.3 --- References --- p.5-3
9

LIN, YI-AN, and 林奕安. "Process Development of Magnesium Gallium Zinc Oxide Films by RF Magnetron Sputtering Method." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3gcy64.

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Abstract:
碩士
國立雲林科技大學
電子工程系
106
In this work, RF magnetron sputtering method has been used to deposit MGZO thin films on silicon substrates (100) and glass substrates at room temperature, respectively. The properties of the MGZO films have been optimized by changing the parameters of deposition and post-annealing processes. The effects of working pressure, sputtering gas flow rate, film thickness, target composition ratio, annealing temperature, annealing time, heating rate, and annealing ambience to the MGZO film properties have been investigated. The morphology, microstructure, composition, electrical properties and optical properties of the MGZO films have been characterized for optoelectronic applications. According to our experimental results, the optimal p-type MGZO film has a resistivity as low as 5.167"×" 10-2 Ω-cm, hall mobility as high as 8.33 cm2/V-s, and carrier concentration as high as 2.834"×" 1018 cm-3; while the optimal n-type MGZO film has a resistivity as low as 2.629"×" 10-2 Ω-cm, hall mobility as high as 7.124 cm2/V-s, and carrier concentration as high as 2.138"×" 1019 cm-3. All of the MGZO films made in this work have achieved more than 90% transmittance in visible region (380 nm - 780 nm). A heterojunction diode has been fabricated on the n-type silicon substrate (111) with the optimal p-type MGZO film.
10

Schleife, André [Verfasser]. "Exciting imperfection : real-structure effects in magnesium-, cadmium-, and zinc-oxide / von André Schleife." 2010. http://d-nb.info/1012878783/34.

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Book chapters on the topic "Zinc Magnesium Oxide":

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Mehak, Rajkumar P. Thummer, Lalit M. Pandey, and T. S. Srivatsan. "Engineered Iron-Oxide Based Nanomaterials for Magnetic Hyperthermia." In Advanced Materials for Emerging Applications (Innovations, Improvements, Inclusion and Impact), 440–63. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815196771124010017.

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Ferrite nanomaterials are extensively studied for their use in the biomedical field primarily because of their tunable magnetic properties and biocompatibility. The use of magnetic nanomaterials, particularly the iron-based nanoparticles, for hyperthermia treatment is one of the emerging applications. However, there are practical constraints on the overall applicability of pure iron-oxide nanoparticles (IONPs) for hyperthermia treatment. In this regard, doping foreign metal ions in the crystal lattice of pure iron-oxide nanoparticles (IONPs) possessing a spinel or inversespinel structure remains to be the simplest approach for the purpose of improving the desired properties. Doping other metal ions into the iron-oxide nanoparticles (IONPs) causes strain in the crystal lattice and is responsible for engineering the structural properties and magnetic properties. Various elements, such as the rare-earth (RE) metals, especially the lanthanides [Yttrium, Gadolinium and Europium], the transition metals [manganese, cobalt, nickel and zinc], and other metals [gold, silver, calcium, titanium, copper and magnesium] are being investigated for their potential to serve as dopants. The divalent transition metals [manganese, cobalt and nickel] doped ironoxide nanoparticles possess highly improved magnetic properties. Incorporating trivalent ions of lanthanides improves the structural properties, magnetic properties, and dielectric properties of the iron-oxide nanoparticles (IONPs). Moreover, doping with zinc, gold and silver imparts the ion-oxide nanoparticles (IONPs) with antibacterial properties while concurrently tuning their structural properties and magnetic outputs.
2

C.A. Silva, Anielle, Eliete A. Alvin, Francisco R.A. dos Santos, Samanta L.M. de Matos, Jerusa M. de Oliveira, Alessandra S. Silva, Éder V. Guimarães, et al. "Doped Semiconductor Nanocrystals: Development and Applications." In Nanocrystals [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96753.

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This chapter aims to show significant progress that our group has been developing and the applications of several doped semiconductor nanocrystals (NCs), as nanopowders or embedded in glass systems. Depending on the type of dopant incorporated in the nanocrystals, the physical, chemical, and biological properties can be intensified. However, it can also generate undesired toxic effects that can potentially compromise its use. Here we present the potential of zinc oxide NCs doped with silver (Ag), gold (Au), and magnesium (Mg) ions to control bacterial diseases in agriculture. We have also performed biocompatibility analysis of the pure and Ag-doped sodium titanate (Na2Ti3O7) NCs in Drosophila. The doped nanocrystals embedded in glassy systems are chrome (Cr) or copper (Cu) in ZnTe and Bi2Te3 NCs for spintronic development nanodevices. Therefore, we will show several advantages that doped nanocrystals may present in the technological and biotechnological areas.
3

Fontani, Marco, Mariagrazia Costa, and Mary Virginia Orna. "The Forerunners of Celtium and Hafnium: Ostranium, Norium, Jargonium, Nigrium, Euxenium, Asium, and Oceanium." In The Lost Elements. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199383344.003.0012.

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Of the naturally occurring nonradioactive elements, hafnium was the next to last to be discovered, preceding the discovery of rhenium by 3 years. It can boast of holding a very strange record: the number of claims for its discovery over the years is unequaled by any other element. This record was the cause of frustration for many scientists who, over the years, took turns in attempts to isolate it. The reason that hafnium remained undiscovered until 1922 lay not so much in that its presence in nature (long known to be quite scarce) wasn’t looked for, but in its peculiar chemical properties that bound it up intimately with zirconium. Toward the end of the 18th century, Martin Heinrich Klaproth melted some forms of yellow-green and red zirconium with sodium hydroxide and then digested the residue several times with hydrochloric and sulfuric acids to eliminate the extraneous silicon. The solution, thought to contain a number of elements, produced, upon addition of potassium carbonate, a generous precipitate. The oxide that Klaproth collected did not seem to belong to any known substance, and he called it terra zirconia. With the passing of the years, he and many other chemists, among them the renowned Jons Jacob Berzelius, determined the elemental composition of zircon and of its correlative minerals. Far from being simply ZrSiO4, zircon contained traces of iron, aluminum, nickel, cobalt, lead, bismuth, manganese, lithium, sodium, zinc, calcium, magnesium, and uranium and small amounts of the rare earths. Some impurities persistently resisted separation from zirconium oxide or zirconia and were taken erroneously for oxides of new elements (new earths). In 1825, Johann Friedrich August Breithaupt (1791–1873) reported the presence of a new element, ostranium, isolated from ostranite, a mineral similar to zircon. Twenty years later, the Swedish chemist, mineralogist, and metallurgist Lars Fredrik Svanberg (1805–78) announced the discovery of a new element. In his publication of 1845, he asserted that the zirconium oxide obtained from a variety of Siberian, Norwegian, and Indian zircon samples was in reality composed of two earths: one, zirconia, already noted, and another unknown earth.

Conference papers on the topic "Zinc Magnesium Oxide":

1

Das, Abinash, Riu Riu Wary, and Ranjith G. Nair. "Magnesium doped zinc oxide as an efficient solar photocatalyst." In DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112942.

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Lin, TzuYang, WeiHsuan Hsu, ChunYi Lee, ShengChung Huang, YuXuan Ding, WenHow Lan, and MingChang Shih. "Electrical study of indium doped magnesium zinc oxide by spray pyrolysis." In 2015 International Symposium on Next-Generation Electronics (ISNE). IEEE, 2015. http://dx.doi.org/10.1109/isne.2015.7131975.

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3

Kephart, Jason M., and W. S. Sampath. "Gallium-doped magnesium zinc oxide (GMZO) transparent conducting oxide layers for CdTe thin-film photovoltaics." In 2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC). IEEE, 2015. http://dx.doi.org/10.1109/pvsc.2015.7355899.

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Good, Brian, Tursun Ablekim, Imran Khan, Matthew O. Reese, Andriy Zakutayev, and Wyatt Metzger. "Electro-optical stability in gallium magnesium zinc oxide layers for CdTe solar cells." In 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC). IEEE, 2020. http://dx.doi.org/10.1109/pvsc45281.2020.9300508.

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Gopi, Praveena Malliyil, and Kala Moolepparambil Sukumaran. "Structural, optical and dielectric properties of magnesium ferrite – Zinc oxide core-shell nanocomposite." In 16TH INTERNATIONAL CONFERENCE ON CONCENTRATOR PHOTOVOLTAIC SYSTEMS (CPV-16). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0029975.

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Alcazar, A. G., M. G. Fernan, K. G. Ngo, A. J. S. Santos, E. E. Chua, and M. C. Pacis. "Voltage Characterization of Magnesium-doped Zinc Oxide by Electrodeposition Method for Solar Photovoltaic (PV) Cells." In 2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management ( HNICEM ). IEEE, 2019. http://dx.doi.org/10.1109/hnicem48295.2019.9073593.

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Bittau, Francesco, Elisa Artegiani, Ali Abbas, Daniele Menossi, Alessandro Romeo, Jake W. Bowers, and John M. Walls. "Magnesium-doped Zinc Oxide as a High Resistance Transparent Layer for thin film CdS/CdTe solar cells." In 2017 IEEE 44th Photovoltaic Specialists Conference (PVSC). IEEE, 2017. http://dx.doi.org/10.1109/pvsc.2017.8366785.

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Morris, Kerrie M., Mustafa Togay, Rachael C. Greenhalgh, Jake W. Bowers, and John M. Walls. "Tuning the band gap of magnesium zinc oxide to enhance band alignment with CdTe based photovoltaic devices." In 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC). IEEE, 2022. http://dx.doi.org/10.1109/pvsc48317.2022.9938528.

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9

Bahgat, Ahmed, Paul Okonkwo, Gupta Manoj, Noora Alqahtani, Rana Shakoor, and Aboubakr Abdullah. "Study of the In Vitro Biodegradation Behavior of Mg–2.5Zn–xES Composite for Orthopedic Application." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2021. http://dx.doi.org/10.29117/quarfe.2021.0097.

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Non-degradable steel and titanium implants used to replace defects of the locomotor system or fabricate vascular stents provide maximum stability but have too many drawbacks. However; the defects in oxide layer and the corrosive nature of physiological environment, the thermodynamic tendencies make the alloys susceptible to release of cationic species in the form of corrosion, which result in triggering various biological factors and compromises the mechanical integrity of the implanted materials. Currently, biodegradable magnesium alloys are considered as promising materials for creation of fixation devices in orthopedics and cardiovascular surgery. In this work, zinc (Zn) and eggshell (ES) reinforced biodegradable magnesium alloy (Mg–2.5Zn), and environment concise (eco) composite (Mg–2.5Zn–xES) was fabricated using disintegrated melt deposition (DMD) technique. In vitro experiments were conducted to explore the effect variable concentration of ES ( 3 and 7 wt%) on the biodegradation behavior of Mg–Zn alloy using simulated body fluid (SBF) at 37 ℃. The corrosion behavior of the Mg–2.5Zn–xES alloys was explored in SBF solution using different techniques such as weight loss measurement, hydrogen evolution, potentiodynamic polarization, electrochemical Impedance Spectroscopy (EIS). EIS revealed increased in vitro degradation of the biodegradable magnesium alloy, and ecofriendly composite as the percentage of ES reinforcement was increased. X-ray diffraction (XRD) was performed to observe the chemical composition of elements and reaction products present in the degraded samples after the corrosion process.
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Sappok, Alexander, Sean Munnis, and Victor W. Wong. "Individual and Synergistic Effects of Lubricant Additive Components on Diesel Particulate Filter Ash Accumulation and Performance." In ASME 2012 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ices2012-81237.

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The current CJ-4 oil specification places a limit on the oil’s sulfated ash content of 1.0% to reduce the build-up of lubricant-derived ash in the diesel particulate filter (DPF). Lubricant additives, specifically detergents and anti-wear additives, contribute to most of the sulfated ash content in the oil and ash accumulation in the DPF, and hence are studied with increasing interest in the optimization of the combined engine-oil-aftertreatment system. However, characteristics of ash deposits found in the particulate filter, which are affected by a number of parameters, differ markedly from those of the ASTM-method defined sulfated ash. In addition, ash characteristics and effects on DPF performance vary substantially among the different metallic base in the additives, specifically calcium, magnesium, and zinc. Through a series of carefully-controlled tests with specially-formulated lubricant additives, this work quantified the individual and combined effects of the most common detergent and anti-wear additives on the ash properties which directly influence DPF pressure drop. The results show that different lubricant additive formulations (Ca, Zn, Mg) produce profound differences in DPF pressure drop. It was found that DPF ash is a complex mixture of metals (Ca, Zn, Mg) in the form of sulfates, phosphates, and oxides. These ash compounds each have unique physical properties, which affect DPF pressure drop differently. In particular, ash containing calcium sulfate compounds resulted in an increase in filter pressure drop by over a factor of two, relative to the same amount of ash composed only of zinc phosphate or magnesium oxide compounds, at the same ash loading in the DPF. In addition, synergistic effects due to specific additive combinations were also explored and showed significant differences in ash composition and degree of exhaust flow restriction imposed by the ash resulting from specific additive combinations, as opposed to the individual additives themselves. Results are useful not only for lubricant formulators to design oils for improved aftertreatment system compatibility, but also to understand the practical effects of ash in the DPF in relation to the standardized sulfated ash definition in the lubricant specification.

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