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Journal articles on the topic 'Magnetic propertie'

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Author: Grafiati

Published: 10 March 2023

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1

Li, Wei Li, Xiao Chen Liu, and Jun Ci Cao. "Influence of Carbon Content on Fe-Cu Alloy Material Performance in Induction Motor with Compound Cage Rotor." Applied Mechanics and Materials 117-119 (October 2011): 1223–26. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.1223.

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New type Fe-Cu alloy is used in the bar of induction motor with compound cage rotor(IMCCR). In this paper, the preparation of three kinds of Fe-Cu alloy is introduced. The influence of its microstructures, hardness and impact toughness is studied by using metalloscope and scanning electron microscope. Meanwhile, physical propertie such as resistivity, and B-H curve is tested by using magnetic testing device and bridge circuit. The influence of carbon content changing on microstructure and performance of Fe-Cu alloy is analysised, which has positive significance to the new type material using in motor.

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2

Cavellec, Myriam, Didier Riou, Cyril Ninclaus, Jean-Marc Grenèche, and Gérard Férey. "[Fe4(PO4)4F2(H2O)3] · [C6H14N2] or ULM-12, the first magnetic ferric phosphate with an open structure: Hydrothermal synthesis, structure, and magnetic propertie." Zeolites 17, no. 3 (September 1996): 250–60. http://dx.doi.org/10.1016/0144-2449(96)00008-5.

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3

Krupa, M. M. "Magnetic and magneto-optical properties of Fe3O4 and NiFe2O4 nanoparticlesMagnetic and magneto-optical properties of Fe3O4 and NiFe2O4 nanoparticles." Functional materials 21, no. 1 (March 30, 2014): 15–20. http://dx.doi.org/10.15407/fm21.01.015.

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4

Lin Jiaqi, 林家齐, 倪海芳 Ni Haifang, 王晨 Wang Chen, and 雷清泉 Lei Qingquan. "Poly (Ethylene Terephthalate) Electronic Structural and Optical Propertie from First Principles Calculations." Acta Optica Sinica 30, no. 11 (2010): 3239–43. http://dx.doi.org/10.3788/aos20103011.3239.

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5

Meier, Wolfgang, and Heino Finkelmann. "Liquid Crystal Elastomers with Piezoelectric Properties." MRS Bulletin 16, no. 1 (January 1991): 29–31. http://dx.doi.org/10.1557/s0883769400057870.

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During the last few years, liquid crystalline elastomers (LCEs) have been systematically produced by cross-linking liquid crystalline side-chain polymers. In these networks, a liquid crystalline molecule is fixed at each monomeric unit. LCEs exhibit a novel combination of properties. Due to liquid crystalline groups, they show anisotropic liquid crystalline properties similar to conventional liquid crystals (LCs); but due to the three-dimensional network-structure of the polymer chains, they show typical elastomer properties, such as rubber elasticity or shape stability. One exceptional property of this combination is demonstrated when a mechanical deformation to the LCE causes macroscopically uniform orientation of the long molecular axis of the LC units (the so-called “director”).This response of the LC-phase structure to an applied mechanical field is similar to the effect of electric or magnetic fields on low molecular weight liquid crystals (LMLC), as illustrated in Figure 1. Figure la shows an undeformed LCE. Because of the non-uniform orientation of the director, the sample scatters light strongly so the elastomer is translucent like frosted glass. On the other hand, applying a mechanical field the director becomes uniformly aligned and the sample is transparent (Figure 1b). Such a macroscopically ordered rubber exhibits optical properties very similar to single crystals. These propertie s of LCEs offer new prospects for technical application, e.g., in nonlinear and integrated optics.

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6

Marita, Yusrini, and Iskandar Idris Yaacob. "G-9 EFFECT OF THICKNESS ON MAGNETIG PROPERTIES OF NANOSTRUCTURED NiFe FILMS(Session: Fuel Cell/Magnet)." Proceedings of the Asian Symposium on Materials and Processing 2006 (2006): 135. http://dx.doi.org/10.1299/jsmeasmp.2006.135.

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7

Song, Hongseon, Dokyoung Kim, Younsoo Kim, Hyungsuk Jung, HanJin Lim, Seunghyup Lee, and Kijung Yong. "Improvement of the electrical and interfacial propertie of TiN/ZrO2 by a modulated atomic layer deposition process with controlled O3 dosing." Thin Solid Films 675 (April 2019): 153–59. http://dx.doi.org/10.1016/j.tsf.2019.02.040.

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8

Fuentes, M. A. E., H. Camacho, and L. Fuentes. "Propiedades de acoplamiento eléctrico y magnético: cristales y policristales." Boletín de la Sociedad Española de Cerámica y Vidrio 40, no. 4 (August 30, 2001): 267–74. http://dx.doi.org/10.3989/cyv.2001.v40.i4.735.

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9

Shalayev, R. V. "Structure and magnetic properties of Ni-N nanofilms." Functional Materials 21, no. 2 (June 30, 2014): 233–36. http://dx.doi.org/10.15407/fm21.02.233.

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10

Zhao, H., X. Li, H. Zhao, and Y. Wang. "Effect of manganese doping on the magnetic and magnetocaloric properties of zinc ferrite." Materiali in tehnologije 53, no. 6 (December 19, 2019): 891–95. http://dx.doi.org/10.17222/mit.2019.089.

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11

Kolotov, I. I., D. V. Lukyanenko, I. E. Stepanova, Y. Wang, and A. G. Yagola. "RECOVERING THE MAGNETIC PROPERTIES OF MERCURY FROM SATELLITE OBSERVATIONS." Eurasian Journal of Mathematical and Computer Applications 10, no. 2 (June 28, 2022): 26–41. http://dx.doi.org/10.32523/2306-6172-2022-10-2-26-41.

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One of the possible approaches to reconstructing the map of the distribution of magnetization parameters in the Mercury’s crust from the data of the Messenger orbital mission is considered. Possible ways of increasing the accuracy of reconstructing the magnetic image of Mercury are discussed.

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12

Kuvandikov, O. K., S. J. Kuvandikov, and K. A. Ugli. "Magnetic Properties of Magnetic Fluids Based on Ni$_x$Co$_{1-x}$Fe$_2$O$_4$." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 42, no. 11 (December 21, 2020): 1499–507. http://dx.doi.org/10.15407/mfint.42.11.1499.

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13

Bueno Baqués, D., J. A. Matutes Aquino, V. Coral Flores, and O. Ayala Valenzuela. "Efectos de la microestructura en las propiedades magnéticas de imanes híbridos de SrFe₁₂O₁₉/MQP-Q." Boletín de la Sociedad Española de Cerámica y Vidrio 44, no. 4 (August 30, 2005): 228–30. http://dx.doi.org/10.3989/cyv.2005.v44.i4.435.

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14

Yushchenko, K. A., A. V. Mats, I. M. Neklyudov, V. I. Sokolenko, and N. A. Chernyak. "Effect of alternating magnetic field on magnetic properties, structure and stressed state of vessel steel welded joints." Paton Welding Journal 2017, no. 4 (April 28, 2017): 10–13. http://dx.doi.org/10.15407/tpwj2017.04.02.

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15

Sharipov, M. Z. "DOMAIN STRUCTURE AND MAGNETIC PROPERTIES OF TERBIUM FERRITE-GARNET IN THE VICINITY OF THE MAGNETIC COMPENSATION POINT." Eurasian Physical Technical Journal 16, no. 2 (December 25, 2019): 21–25. http://dx.doi.org/10.31489/2019no2/21-25.

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16

Stary, O. "FORMATION OF MAGNETIC PROPERTIES OF FERRITES DURING RADIATION-THERMAL SINTERING." Eurasian Physical Technical Journal 17, no. 2 (December 24, 2020): 6–10. http://dx.doi.org/10.31489/2020no2/6-10.

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The results of a comparative analysis of the laws governing the formation of ferrite hysteresis loop parameters sintered in thermal and radiation-thermal conditions were shown. The influence of radiation exposure on the interconversion of microstructure defects and their content in ferrites, depending on the duration and temperature of treatment, was established. Also, it was shown that recrystallization grain growth under irradiation conditions is ahead of grain growth during thermal heating. The observed radiation effects were associated with the effect of radiation on the microstructure. The magnetic parameters are uniquely determined by the compaction of the sample.

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17

Apiñaniz, E., and F. Plazaola. "Propiedades electrónicas y magnéticas de las aleaciones Fe-Al." Boletín de la Sociedad Española de Cerámica y Vidrio 39, no. 3 (June 30, 2000): 359–62. http://dx.doi.org/10.3989/cyv.2000.v39.i3.858.

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18

Proskurina, V. O. "Internal stresses and magnetic properties of Fe-Co electrolytic coatings." Functional materials 24, no. 3 (September 29, 2017): 005–426. http://dx.doi.org/10.15407/fm24.03.420.

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19

KUNCA, Branislav, Jozef MARCIN, Peter ŠVEC, and Ivan ŠKORVÁNEK. "EFFECT OF RAPID ANNEALINGON MAGNETIC PROPERTIES OF THE NANOCRYSTALLINE Fe80Nb3Cu1Si6B10ALLOY." Acta Electrotechnica et Informatica 19, no. 2 (June 30, 2019): 33–37. http://dx.doi.org/10.15546/aeei-2019-0012.

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20

GOLEA, Daniela Georgiana, and Lucian Ștefan COZMA. "THE MAGNETIC PROPERTIES OF MATERIALS AND NEW MILITARY APPLICATIONS OF THEM." SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE 19, no. 1 (July 31, 2017): 305–14. http://dx.doi.org/10.19062/2247-3173.2017.19.1.37.

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21

Syrotyuk, S. V. "Electronic Structure, Magnetic and Mechanical Properties of MnCoSi Half-Heusler Alloy." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 43, no. 4 (July 13, 2021): 541–51. http://dx.doi.org/10.15407/mfint.43.04.0541.

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22

Shalatonin, Valery. "Effect of Unipolar Magnetic Field on Macroscopic Properties of Distilled Water." International Journal of Pharma Medicine and Biological Sciences 6, no. 3 (2017): 89–93. http://dx.doi.org/10.18178/ijpmbs.6.3.89-93.

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23

Yermolenko, I. Yu. "Galvanic ternary Fe-Co-W coatings: structure, composition and magnetic properties." Functional materials 25, no. 2 (June 27, 2018): 274–81. http://dx.doi.org/10.15407/fm25.02.274.

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24

Abbas, Saadi R. "Predicting of Asymptotic Properties of Magnetic Lens Using Analytical Potential Function." NeuroQuantology 18, no. 2 (February 28, 2020): 95–100. http://dx.doi.org/10.14704/nq.2020.18.2.nq20132.

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25

Srivani, Alla. "Spintronics and Optical Properties of Advanced Bio Materials." Radiology Research and Diagnostic Imaging 2, no. 1 (February 9, 2023): 01–05. http://dx.doi.org/10.58489/2836-5127/009.

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Spintronics is an interactive combination of electronics and magnetics that has grown in popularity in the twenty-first century as nanotechnology has advanced. Spintronics is a new type of electronics that employs mutual control of magnetic and other physical signals, such as electrical and optical signals. Spin current has recently received a lot of attention as a basic idea in spintronics. Understanding spin current entails deciphering the mechanisms underlying the mutual control of diverse physical signals, which should lead to future advances in spintronics. The notion of spin current and its historical context are discussed first in this chapter, followed by a discussion of innovative materials for spintronics. Much attention is also dedicated to the physical phenomena that result from the coupling of spins.

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26

Min, Eui Hong, and Jae Gui Koh. "A Study of Electromagnetic Properties on Magnetic Fluids." Korean Journal of Materials Research 14, no. 9 (September 1, 2004): 659–63. http://dx.doi.org/10.3740/mrsk.2004.14.9.659.

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27

Karas, V. I., E. V. Karasyova, A. V. Mats, V. I. Sokolenko, A. M. Vlasenko, and V. E. Zakharov. "Influence of Alternating Magnetic Field on Physical and Mechanical Properties of Crystals." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 38, no. 8 (December 11, 2016): 1027–55. http://dx.doi.org/10.15407/mfint.38.08.1027.

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28

Lyogenkaya, A. A., G. E. Grechnev, O. V. Kotlyar, A. S. Panfilov, and V. P. Gnezdilov. "Electronic Structure and Magnetic Properties of FeTe, BiFeO3, SrFe12O19 and SrCoTiFe10O19 Compounds." Ukrainian Journal of Physics 61, no. 6 (June 2016): 523–30. http://dx.doi.org/10.15407/ujpe61.06.0523.

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29

Azmi, Annur Azlin, and SITI AMIRA OTHMAN. "Effect of Ferrite as Filler in Sugarcane Bagasse Paper via Irradiation Method." Key Engineering Materials 908 (January 28, 2022): 441–47. http://dx.doi.org/10.4028/p-602ji8.

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Deforestation issues increased dramatically every year specially to produce paper. Therefore, to supplement the limited wood fibre resources, non-wood fibres especially sugarcane bagasse introduced an alternatives resolve for raw material is considered in paper-based industries. This study addresses the analysis of magnetic sugarcane bagasse materials as substitute fibres in papermaking. Paper is generally made with cellulose fibre which has some specific features used for educational, packaging, and cleaning purposes. Sugarcane bagasse (Saccarhumofficinarum) is popular for its cellulose, holocellulose, and lignin that far more convenient than wood fibres. Meanwhile, the demands of magnetic material in magnetic papermaking industry has increased due to its excellent mechanical characteristics. As the magnetic paper shows some superiority in properties such as renewable use and folding resistance. The used of filler in this study is to alter the properties such as texture, opacity, brightness, dimensional stability, and overall printability. Thus, the used of ferrite (Fe) magnet as a filler can enhance the paper properties. Ferrite is recognized as a hard-magnetic material with distinct properties such as good mechanical hardness and chemical stability, therefore it is a much more convenient material for magnetic paper production. Through the observation under Scanning Electron Microscope (SEM), the image obtained shows that magnetics sugarcane bagasse paper was more convenient to be used as an alternative for paper making. Next, Fourier-Transform Infrared Spectroscopy (FTIR) recognizes the presence of a functional group of the magnetics sugarcane bagasse paper. Moreover, the chemical properties obtained from this study show that the magnetics sugarcane bagasse was as good as the commercial paper available in the industries. To increase the integrity of the paper, the radiation process by using gamma-ray was done to the paper to see the different for pre and post radiation.

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30

Hayashi, Koichi, Yasushi Ido, and Takatomo Yamada. "OS22-1-2 Basic Properties of Damping Force of a Damper Utilizing Magnetic Functional Fluids in the Presence of Magnetic Field." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS22–1–2—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os22-1-2-.

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31

Сёмкин, Сергей Викторович, and Виктор Павлович Смагин. "Термодинамические функции и фрустрационные свойства магнетиков." Территория новых возможностей. Вестник Владивостокского государственного университета экономики и сервиса, no. 3 (2021): 158–68. http://dx.doi.org/10.24866/vvsu/2073-3984/2021-3/158-168.

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В настоящей работе получены выражения, позволяющие вычислить свободную энергию и энтропию для магнитной системы, для которой есть точное или приближенное выражение для намагниченности. Вывод этих выражений опирается только на асимптотическое поведение намагниченности при увеличении внешнего поля и на значение гамильтониана магнитной системы в состоянии насыщения. Поэтому полученный результат легко может быть распространен на достаточно широкий класс магнитных моделей как чистых, так и с немагнитным разбавлением. Полученное выражение для магнитной энтропии может служить средством анализа фрустрированного состояния в системе. В качестве признака фрустрированности магнитной системы в работе используется отличие от нуля энтропии основного состояния. Примером магнитной системы, допускающей возникновение фрустраций, служит одномерная модель Изинга во внешнем поле с взаимодействием только ближайших соседей. Анализ выражения для намагниченности этой модели позволяет построить фазовую диаграмму основного состояния. Фазовыми переменными на этой диаграмме являются константа обменного взаимодействия ближайших соседей и величина внешнего поля. Диаграмма состоит из трех двумерных областей с положительной, отрицательной и нулевой намагниченностью соответственно. Границы между этими областями можно рассматривать как отдельные зоны диаграммы со своими значениями намагниченности. Анализ выражения для энтропии показывает, что энтропия основного состояния обращается в ноль во внутренних точках областей диаграммы, что говорит об отсутствии фрустраций в этих областях. Энтропия основного состояния не равна нулю на границах областей с нулевой и ненулевой намагниченностью. Ключевые слова и словосочетания: фрустрация, модель Изинга, фазовая диаграмма.

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32

Peña, O., D. Gutiérrez, P. Durán, and C. Moure. "Propiedades magnéticas de la manganita Y(Cu,Mn)O₃ sustituida en el sitio del manganeso." Boletín de la Sociedad Española de Cerámica y Vidrio 43, no. 4 (August 30, 2004): 732–35. http://dx.doi.org/10.3989/cyv.2004.v43.i4.419.

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33

Medina Chanduví, H. H., A. V. Gil Rebaza, and L. A. Errico. "PROPIEDADES ESTRUCTURALES, MAGNÉTICAS E HIPERFINAS DE LA FERRITA MgFe2O4: ESTUDIO MEDIANTE CÁLCULOS AB-INITIO." Anales AFA 31, no. 4 (January 15, 2021): 121–26. http://dx.doi.org/10.31527/analesafa.2020.31.4.121.

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We present here a first principles study of the structural, electronic, magnetic, and hyperfine properties of magnesium ferrite, MgFe2O4 (spinel structure). The study was carried out within the framework of Functional Density Theory (DFT) using the full potential linearized augmented plane waves method (FPLAPW) using both the Generalized Gradient (GGA) and the GGA+U approximations for the exchange and correlation potential. To discuss the magnetic ordering and the lowest energy structure of the system we consider different distributions of Mg and Fe ions in both cationic sites of the spinel structure, as well as different spin configurations. Our calculations predict that the equilibrium structure corresponds to an inverted antiferromagnetic configuration, in which the magnetic moments of the Fe atoms located at sites A are ferromagnetically ordered among themselves and antiferromagnetically with respect to the Fe located at the sublattice of sites B. Our GGA calculations underestimate the energy band-gap of the system, while GGA+U predict a band-gap of 2.3 eV, in excellent agreement with the reported values. The results for the hyperfine properties at the Fe sites (isomer shift, quadrupole splitting and hyperfine field) are in excellent agreement with the Mössbauer spectroscopy results reported in the literature, giving support to the equilibrium structure predicted by FP-LAPW.

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34

Milyaev, I. M., M. I. Alymov, V. S. Yusupov, V. A. Zelensky, A. I. Milyaev, and A. B. Ankudinov. "Hard Magnetic Properties of Mn-Al-C Alloys Doped with Titanium and Iron." Advanced Materials & Technologies, no. 3 (2017): 014–16. http://dx.doi.org/10.17277/amt.2017.03.pp.014-016.

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35

Chitra, Chitra, T. Raguram, and K. S. Rajni. "Microstructural and Magnetic Properties of Cobalt Ferrite Nanoparticles Synthesized by Sol-Gel Technique." International Journal of Trend in Scientific Research and Development Volume-2, Issue-5 (August 31, 2018): 371–77. http://dx.doi.org/10.31142/ijtsrd15871.

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36

Holovatsky, V. A. "Effect of magnetic and electric fields on optical properties of semiconductor spherical layer." Semiconductor Physics Quantum Electronics and Optoelectronics 17, no. 1 (March 31, 2014): 7–13. http://dx.doi.org/10.15407/spqeo17.01.007.

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37

Konakova, R. V. "Influence of pulse magnetic fields treatment on optical properties of GaAs based films." Semiconductor Physics Quantum Electronics and Optoelectronics 17, no. 2 (June 30, 2014): 130–33. http://dx.doi.org/10.15407/spqeo17.02.130.

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38

Sandulyak, Alexander V., Roman Y. Tkachenko, Darya A. Sandulyak, Maria N. Polismakova, Anna A. Sandulyak, and Vera A. Ershova. "Analysis of dependence between magnetic properties of granulated ferromagnetic specimens and relation of its length to diameter." Izmeritel`naya Tekhnika, no. 6 (2020): 46–51. http://dx.doi.org/10.32446/0368-1025it.2020-6-46-51.

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Paper studies the problems about experimental determining magnetic parameters of nonuniform granular magnetics. It has been noted that the existing shortage of direct and (or) indirect experimental data on the magnetic properties of granular ferromagnetic specimens with different values of a relative length, in particular, has a negative impact on the validity of the requirements and decisions to create and ensure the performance of relevant functional elements, movable operating elements of various equipments and devices. By the example of cylindrical specimens of balls with the range of relative length 1–16 within the framework of effective medium macromodel the dependences of induction, magnetic permeability, susceptibility, magnetization and field intensity have been obtained. It has been shown that in the range of field intensity 9–47 kA/m values of induction and magnetization of investigating specimens increase, that indicates the absence of magnetic saturation of such granular (as opposed to solid) magnetics. And this is the case at almost stable values of magnetic susceptibility and permeability. Obtained results are useful in designing movable operating elements of various equipments and devices.

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39

Sánchez, L., and J. R. Jurado. "Correlación entre la estructura de bandas y las propiedades físicas de óxidos cerámicos de estructura perovsquita con metales de transición (II): Propiedades magnéticas y electrocatalíticas." Boletín de la Sociedad Española de Cerámica y Vidrio 40, no. 5 (October 30, 2001): 333–38. http://dx.doi.org/10.3989/cyv.2001.v40.i5.1055.

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40

Wu, Wenbo, Runli Tang, Qianqian Li, and Zhen Li. "Functional hyperbranched polymers with advanced optical, electrical and magnetic properties." Chemical Society Reviews 44, no. 12 (2015): 3997–4022. http://dx.doi.org/10.1039/c4cs00224e.

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This review summarizes the recent progress in functional HBPs and their application in optics, electronics and magnetics, including light-emitting devices, aggregation-induced emission materials, nonlinear optical materials, chemosensors, solar cells, magnetic materials, etc., and provides outlooks for further exploration in the field.

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41

Palomares-Sánchez, S., M. Mirabal-García, J. A. Matutes-Aquino, and M. I. Rosales. "Efecto de la adición de SiO₂ sobre las propiedades magnéticas de ferritas de bario." Boletín de la Sociedad Española de Cerámica y Vidrio 39, no. 2 (April 30, 2000): 251–54. http://dx.doi.org/10.3989/cyv.2000.v39.i2.1047.

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42

Ma, Yanwei, M. Bahout, O. Peña, P. Durán, and C. Moure. "Propiedades magnéticas de las espinelas (Co,Ni,Mn)₃O₄." Boletín de la Sociedad Española de Cerámica y Vidrio 43, no. 3 (June 30, 2004): 663–67. http://dx.doi.org/10.3989/cyv.2004.v43.i3.472.

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43

Syrotyuk, Stepan. "The spin-polarized electronic and magnetic properties of zinc selenide heavy doped with chromium." Computational Problems of Electrical Engineering 11, no. 1 (April 25, 2021): 28–31. http://dx.doi.org/10.23939/jcpee2021.01.028.

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Atthe first stage, the structureof theZnSe crystal doped with chromium atoms (ZnCrSe)has been found by optimization procedure. At the second stage, the electronic properties of this material have been evaluated within the two approaches. The exchange-correlation functionals used here are based on the generalized gradient approximation (GGA) and the hybrid functional PBE0. The GGA approach provides the metallic state for electrons with the spin up, and for opposite spin orientation the material ZnCrSe bahaves as semiconductor, with the band gap of 2.48 eV. The hybrid functional approach also gives a gapless state for a spin up electron states, and for a spin down it provides the forbidden gap value of 2.39 eV. The magnetic moment of the unit cell, found with the two functionals, is the same and equals to 4 Bμ(Bohr magnetons). So, the calculations with the two exchange-correlation functionals provide the prediction of half-metallic properties of the ZnCrSe material, which is an interesting candidate for spintronic applications.

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Renuka, Nafdey, and Kelkar Deepali. "Synthesis of polyaniline in presence of low magnetic field, its structure and electrical properties." Chemistry & Chemical Technology 2, no. 2 (June 15, 2008): 105–9. http://dx.doi.org/10.23939/chcht02.02.105.

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Polyaniline is synthesized chemically under the influence of low magnetic field of intensity 1KGauss. The effect of magnetic field during the synthesis process causes enhancement of electrical conductivity by two orders of magnitude. This increased electrical conductivity depends on the polymer chain ordering, as well as structure and morphology of the reported polymer.

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Odnovolova, A. M. "Formation characteristics of Fe3O4 magnetic particles precipitated from aqueous solutions and their sorption properties." Functional materials 22, no. 4 (December 15, 2015): 475–81. http://dx.doi.org/10.15407/fm22.04.475.

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Matai, Shintaro, Hibiki Sakakura, and Mahoto Takeda. "Relationship between Microstructure and Magnetic Properties of Nano-Scale Particles Formed in Cu-Ni-(FeCo) Alloys." Materials Science Forum 941 (December 2018): 1324–29. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1324.

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Numerous studies have been conducted to develop next-generation recording technology in spintronics. Because ultrafine magneitc particles are vital components of the technology, the interplay between the microsturcture and magnetic properties has attracted attention extensively in recent years. We focused on the relationship between the microstructure and magnetic properties of Cu-Ni-X (X=Fe, Co, FeCo) alloys comprising nanogranular magnetic particles. In this work, we prepared Cu-20 at% Ni-5 at% (FeCo), Cu-20 at% Ni-5 at% Fe, Cu-20 at% Ni-5 at% Co and examined the changes of microstructure and magnetic properties associated with heat treatments and composition. To examaine microstructural evolution of the alloy specimens, we conducted transmission electron microscope observations (TEM) with the as-quenched specimens and those aged at at 773-1073 K. We also carried out magneto-thermo gravimetry (MTG) measurements, superconducting quantum interference device (SQUID) measurements, magnetoresistance (MR) measurements and first-principles calculations based on the Koster-Korringa-Rostker (KKR) method with the Coherent Potential Approximation (CPA), to investigate the magnetic properties. The present work confirmed that the microstructure significantly changed, depending on the composition and heat treatment conditions. The present work also revealed that the magnetic properties closely correlated with the microstructure of samples.

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Ding, Chao, Yunhui Mei, Khai D. T. Ngo, and Guoquan Lu. "A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics." Materials 12, no. 12 (June 22, 2019): 1999. http://dx.doi.org/10.3390/ma12121999.

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Soft magnetic moldable composites (SM2Cs) would be ideally suited for the integration of magnetic components in power electronic converters because they can be formed into magnetic cores by low-temperature and pressure-less processing. However, most SM2Cs have low relative magnetic permeability, typically less than 30, and high core-loss densities at switching frequencies over 1 MHz. To improve their magnetic properties, we combine powders of Permalloy and a NiZn ferrite with an acrylic polymer to formulate a paste of SM2C. The paste can be molded and then cured below 200 °C without pressure to form cores with a relative permeability over 35 and a core-loss density at 1 MHz, 30% lower than those of commercial cores. The ease of its processing and high-performance properties makes the SM2C a good candidate material for the integration of power magnetics.

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Okatev, R., P. Frick, and D. Sokoloff. "Spectral Properties of Low-order Dynamo Systems." Nelineinaya Dinamika 18, no. 2 (2022): 289–96. http://dx.doi.org/10.20537/nd220209.

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The solar 11-year activity cycle is a famous manifestation of magnetic activity of celestial bodies. The physical nature of the solar cycle is believed to be large-scale magnetic field excitation in the form of a wave of a quasi-stationary magnetic field propagating from middle solar latitudes to the solar equator. The power spectrum of solar magnetic activity recorded in sunspot data and underlying solar dynamo action contains quite a stable oscillation known as the 11-year cycle as well as the continuous component and some additional weak peaks. We consider a low-order model for the solar dynamo. We show that in some range of governing parameters this model can reproduce spectra with pronounced dominating frequency and wide spectral peaks in the low-frequency region. The spectra obtained are qualitatively similar to the observed solar activity spectrum.

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S. A. Masti, S. A. Masti. "Preparation, Characterization and Magnetic Property Study of Gd3+ Substituted Mg-Zn Ferrites." Indian Journal of Applied Research 4, no. 1 (October 1, 2011): 475–77. http://dx.doi.org/10.15373/2249555x/jan2014/147.

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García-Casillas, P. E., J. A. Matutes-Aquino, B. J. Palla, and D. O. Shah. "Estudio comparativo de las propiedades magnéticas de ferritas hexagonales de Bario obtenidas por los métodos de coprecipitación y microemulsión." Boletín de la Sociedad Española de Cerámica y Vidrio 38, no. 6 (December 30, 1999): 549–53. http://dx.doi.org/10.3989/cyv.1999.v38.i6.890.

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