Relevant bibliographies by topics / Ag₂Te

Academic literature on the topic 'Ag₂Te'

Author: Grafiati
Published: 8 June 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Ag₂Te":

1

Milenov, T. I., T. Tenev, I. Miloushev, G. V. Avdeev, C. W. Luo, and W. C. Chou. "Preliminary studies of the Raman spectra of $$\hbox {Ag}_{2}\hbox {Te}\hbox { and }\hbox {Ag}_{5}\hbox {Te}_{3}$$ Ag 2 Te and Ag 5 Te 3." Optical and Quantum Electronics 46, no. 4 (October 23, 2013): 573–80. http://dx.doi.org/10.1007/s11082-013-9810-1.

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2

Römermann, F., and R. Blachnik. "The excess enthalpies of liquid Ag–Ga–Te and Ag–In–Te alloys." Thermochimica Acta 366, no. 2 (January 2001): 105–20. http://dx.doi.org/10.1016/s0040-6031(00)00726-7.

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3

Park, Kee-Ryung, Seil Kim, Nosang V. Myung, Sung-Oong Kang, and Yong-Ho Choa. "Simple electrochemical synthesis of ultra-long silver telluride nanotubes." RSC Advances 5, no. 38 (2015): 29782–85. http://dx.doi.org/10.1039/c4ra15688a.

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Ultra-long Ag2Te nanotubes could be electrochemically synthesized by post-electrodeposition of Te on electro-spun Ag nanofibers, in which Ag atoms diffuse into layers of Te and results in a morphology change from nanofibers to hollow nanotubes.
4

Roemermann, F., and R. Blachnik. "ChemInform Abstract: The Excess Enthalpies of Liquid Ag-Ga-Te and Ag-In-Te Alloys." ChemInform 32, no. 14 (April 3, 2001): no. http://dx.doi.org/10.1002/chin.200114009.

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5

Moroz, Mykola, Fiseha Tesfaye, Pavlo Demchenko, Emanuela Mastronardo, Oksana Mysina, Myroslava Prokhorenko, Serhiy Prokhorenko, Daniel Lindberg, Oleksandr Reshetnyak, and Leena Hupa. "Experimental Thermodynamic Characterization of the Chalcopyrite-Based Compounds in the Ag–In–Te System for a Potential Thermoelectric Application." Energies 15, no. 21 (November 2, 2022): 8180. http://dx.doi.org/10.3390/en15218180.

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The equilibrium concentration space of the Ag–In–Te system in the part AgInTe2–Te–In2Te3 was studied through the modified solid-state electromotive force (EMF) method by dividing In2Te3–In2Te5–Ag3In97Te147 (I), In2Te5–Te–Ag3In97Te147 (II), Ag3In97Te147–Te–AgIn5Te8 (III), AgIn5Te8–Te–AgIn3Te5 (IV), and AgIn3Te5–Te–AgInTe2 (V), into separate phase regions at T ≤ 500 K. The formation of a thermodynamically stable combination of the binary and ternary phases in the (I)–(V) phase regions from a metastable phase mixture of substances was carried out at T ≤ 500 K in the R(Ag+) part of the positive electrode (PE) of the galvanic cells (GCs) of the structure: (−) C |∙| Ag |∙| SE |∙| R(Ag+) |∙| PE |∙| C (+), where C is the graphite (inert electrode), SE is the solid-state electrolyte (Ag3GeS3Br glass), and Ag is the left (negative) electrode. The Ag+ ions in the R(Ag+) region functioned as small nucleation centers for the formation of the stable phases. The spatial position of the (I)–(V) phase regions in the concentration space of the Ag–In–Te system relative to the position of silver was used to express the overall potential-forming reactions with the participation of the substances Ag, Te, In2Te5, Ag3In97Te147, AgIn5Te8, AgIn3Te5, and AgInTe2. The subsequent EMF measurements were carried out by applying the same GCs. The temperature dependences of the EMF of GCs with PE of the (I)–(V) phase regions were here used to determine, for the first time, the values of standard thermodynamic functions of the binary and ternary compounds. The determined values of the Gibbs energies of the formation of compounds are equal: GIn2Te5○=(182.7±1.9) kJ·mol−1, GAgInTe2○=(115.0±3.1) kJ·mol−1, GAgIn3Te5○=(301.5±6.5) kJ·mol−1, GAgIn5Te8○=(487.6±11.3) kJ·mol−1, and GAg3In97Te147○=(8594±189) kJ·mol−1 The correctness of the division of the equilibrium phase space of the Ag–In–Te system in the part AgInTe2–Te–In2Te3 involving the AgInTe2, AgIn3Te5, AgIn5Te8, and Ag3In97Te147 compounds was confirmed by the agreement of the calculated and literature-based thermodynamic data for In2Te5 compound. Compositions of pairs of the ternary compounds for their subsequent practical application were proposed.
6

Minnikova, Tatiana, Sergey Kolesnikov, Natalia Evstegneeva, Alena Timoshenko, and Natalia Tsepina. "Estimation of the Enzymatic Activity of Haplic Chernozem under Contamination with Oxides and Nitrates of Ag, Bi, Te and Tl." Agronomy 12, no. 9 (September 14, 2022): 2183. http://dx.doi.org/10.3390/agronomy12092183.

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Sustainable agriculture is only possible if the agroecological services of the soil are preserved. Soil contamination with rare elements such as silver (Ag), bismuth (Bi), tellurium (Te), and thallium (Tl) is less studied, but their toxicity is no less high than in other heavy metals. Activity of soil enzymes is of great importance for the healthy functioning of soils, agroecosystem services, and their fertility. It is necessary to assess the ecological state of black soil using the most sensitive and informative indicators of the state of soils—their enzymatic activity. The objective of this research was to evaluate changes in activity of five priority soil enzymes (catalase, dehydrogenases, invertase, phosphatase, and urease) when contaminated with oxides and nitrates of Ag, Bi, Te, and Tl in a laboratory model experiment. The integral toxicity of nitrates and oxides of Ag, Bi, Te, and Tl was assessed by the integrated index of soil enzymatic activity. A comparison of the toxicity of oxides and nitrates of each element, according to the integrated index of soil enzymatic activity, allowed us to establish that Ag oxide is more toxic than Ag nitrate; Bi oxide is equivalent in its toxicity to Bi nitrate; and Tl and Te oxides are less toxic than Tl and Te nitrates. When contaminated with oxides, the most informative indicators are activity of invertase (Ag), urease (Bi, Tl), and phosphatase (Te). When contaminated with nitrates, the most informative indicators are activity of phosphatase (Ag) and invertase (Bi, Tl, and Te). Activity of phosphatase and catalase are the most sensitive to contamination by oxides and nitrates of Ag, Bi, Tl, and Te, and dehydrogenases, invertase, and urease are the least sensitive.
7

Kumar, Neeraj, Suprakas Sinha Ray, and Jane Catherine Ngila. "Ionic liquid-assisted synthesis of Ag/Ag2Te nanocrystals via a hydrothermal route for enhanced photocatalytic performance." New Journal of Chemistry 41, no. 23 (2017): 14618–26. http://dx.doi.org/10.1039/c7nj03295a.

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Herein, Ag2Te and Ag/Ag2Te nanocrystals were synthesised via a hydrothermal method using diphenyl ditelluride as a new tellurium source and 1-butyl-3-methyl imidazolium acetate (BMIA IL) as a structure controlling and conducting coating source.
8

Karakaya, I., and W. T. Thompson. "The Ag-Te (Silver-Tellurium) System." Journal of Phase Equilibria 12, no. 1 (February 1991): 56–63. http://dx.doi.org/10.1007/bf02663676.

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9

Shanmugan, Subramani, Devarajan Mutharasu, and Hassan Zainuriah. "Properties of Ag Doped CdTe Thin Film Prepared by Stacked Elemental Layer (SEL) Method." Advanced Materials Research 488-489 (March 2012): 742–47. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.742.

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Thin films of elements (Cd,Te,Ag) were layered as a stack (Te/Cd/Te/Ag/Cd) for doping process with different Ag and Cd thickness by SEL method. The XRD results were depicted the presence of Cubic phase CdTe with (111) orientation along with Ag2Te, CdAgTe, AgTe phases. The peaks related to Ag atom at higher concentration evinced the presence of non-reacted Ag atoms on the surface with higher Ag concentration. The observed results showed the growth of CdTe crystals in (111) orientation with high Ag concentration. The AFM results of the annealed stack were clearly indicated the influence of Ag concentration in grain growth as well as surface roughness. Photo-resistivity studies of the annealed stacks also revealed the effect of Ag concentration in reducing the resistance with difference light sources. The observed results suggested that the SEL method could be used for effective doping of transition metals to achieve desired properties.
10

Usuki, Takeshi, Keigo Abe, Osamu Uemura, and Yasuo Kameda. "Ionic Conduction in Liquid Ag–Se and Ag–Te Systems." Journal of the Physical Society of Japan 70, no. 7 (July 15, 2001): 2061–67. http://dx.doi.org/10.1143/jpsj.70.2061.

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You might also be interested in the extended bibliographies on the topic 'Ag₂Te' for particular source types:
Journal articles Dissertations / Theses

Dissertations / Theses on the topic "Ag₂Te":

1

Kfouri, Charbel el. "Système Ag-As-Te diagramme de phases et matériaux vitreux /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614640f.

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2

Al, Hokayem Karen. "Synthèse électrochimique de nanostructures à base de tellure pour la conversion thermoélectrique." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0315.

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Parmi les matériaux thermoélectriques, le tellure possède un coefficient Seebeck positif élevé (500 μV/K) à température ambiante mais avec une conductivité thermique relativement élevée (3 W/m.K). La nanostructuration est une solution pour améliorer les performances thermoélectriques, la conductivité thermique de réseau pouvant être réduite. Dans ce travail, nous avons synthétisé des nanostructures de Te auto-supportées par électrodéposition en profitant de l'effet matrice des liquides ioniques. Des nanostructures hexagonales monocristallines ont été systématiquement obtenues avec une orientation préférentielle le long de la direction [001]. En appliquant notamment une faible densité de charge, leurs tailles ont pu être ajustées à 52 ± 11 nm de diamètre et à moins de 300 nm de long. Les nanobâtonnets de tellure ont été alors utilisés comme précurseurs d'une étape de synthèse supplémentaire. En effet, par simple réaction d'oxydo-réduction dans une solution aqueuse d'Ag(I) ou de Cu(II), les nanostructures de Te ont été transformées respectivement en nanobâtonnets monocristallins Ag2+xTe et Cu1,75Te. Dans la dernière partie du travail, nous avons tenté d'incorporer ces nanostructures ainsi que des graphène quantum dots, à conductivité électrique élevée, dans des polymères conducteurs afin de réaliser des films hybrides flexibles. Ces derniers combinent les propriétés thermoélectriques intéressantes des nanostructures et la faible conductivité thermique de polymère conducteur comme le poly(3-hexylthiophène) (P3HT)
Among the thermoelectric materials, tellurium has a high positive Seebeck coefficient (500 μV/K) at room temperature but with a relative high thermal conductivity (3 W/m.K). Nanostructuring is a solution to improve thermoelectric performances, as the lattice part of the thermal conductivity can be independently lowered. In this work, we synthesized self-standing Te nanostructures by electrodeposition technique, taking advantage of the templating properties of ionic liquids solvents. Single crystalline hexagonal nanostructures were systematically obtained with a preferential orientation along the [001] direction. By varying the conditions of electrodeposition, the size of nanostructures can be tuned. Finally, nanorods of 52 ± 11 nm in diameter and less than 300 nm long were grown by applying a small charge density. Tellurium nanorods were used as precursors of an additional synthesis step. Indeed, by simple redox reaction in Ag(I) or Cu(II) aqueous solution, Te nanostructures have been transformed into single crystalline nanorods Ag2+xTe and Cu1.75Te respectively. In the last part of the work, we tried to incorporate these nanostructures as well as graphene quantum dots in conductive polymer in order to realize flexible hybrid films. The latter should combine the interesting thermoelectric properties of the nanostructures and the low thermal conductivity as poly(3-hexylthiophene) (P3HT)
3

EL, KFOURI CHARBEL. "Contribution a l'etude du systeme binaire ag-as-te : diagramme de phases et materiaux vitreux." Paris 6, 1988. http://www.theses.fr/1988PA066225.

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Construction du diagramme de phase ag-as-te par atd et diffraction rx a temperature ordinaire ou a temperature variable. Mise en evidence de deux systemes quasi-lineaires (ag#2te-as#2te#3 et ag#2te-as) et de trois composes inconnus jusqu'ici (ag#1#1aste#7, agaste#2 et agas#3te#5) dans le systeme ag#2te-as et de trois composes inconnus jusqu'ici (ag#1#1aste#7, agaste#2 et agas#3te#5) dans le systeme ag#2te-as#2te#3. Description de la zone formatrice de verre. Relations entre l'etude de cette zone, l'evolution des temperatures de transition vitreuse et de cristallisation avec le diagramme de phase. Mise en evidence d'une separation de phase sub-liquidus par recuit de produits vitreux
4

Perlt, Susanne. "Microstructure Analyses and Structure-Property Relationships of Ag(1-x)Pb(18)Sb(1+y)Te(20)." Doctoral thesis, Universitätsbibliothek Leipzig, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-114865.

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Die vorliegende Dissertation beschäftigt sich mit der Optimierung und der Untersuchung der Materialeigenschaften des thermoelektrischen Materials Ag1-xPb18Sb1+yTe20 (englisch Lead-Antimony-Silver-Telluride: LAST). Bei LAST handelt es sich um Bleitellurid mit geringen Anteilen von Silber und Antimon, welche teilweise gelöst den Gitterplatz von Blei substituieren (Einbau in PbTe-Matrix) bzw. Fremdphasen auf m- und nm-Skala bilden. Seine hohe thermoelektrische Güte wird dabei hauptsächlich der geringen thermischen Gitterleitfähigkeit zugeschrieben, die in ersten Veröffentlichungen mit dem Auftreten nanoskaliger, Silber- und Antimonreicher Einschlüsse und deren Funktion als Phononenstreuer erklärt wurde. Das durch Schmelzsynthese hergestellte Bulkmaterial wurde im Rahmen der Arbeit durch Gefügeabbildung und Elementanalytik untersucht. In Kooperation mit den Projektpartnern sollte daraus eine Korrelation von Struktur- und Funktionseigenschaften abgeleitet, sowie eine reproduzierbare Syntheseroute entwickelt werden. Die elektronenmikroskopische Abbildung der Mikrostruktur erfolgte dabei auf zwei Größenskalen. Auf der µm-Skala wurde die Oberfläche des Bulkmaterials auf Homogenität und Zusammensetzung sowie Anteil des Fremdphasenbestands untersucht. Trotz des sehr komplexen Phasenbestandes aufgrund des quaternären Phasendiagramms und der Vielzahl relevanter Syntheseparameter konnte ein Zusammenhang zwischen Zusammensetzung (Regulierung des Silber- und Antimonanteils bzw. dessen Verhältnis), Temperbedingungen und thermoelektrischen Eigenschaften hergestellt werden. Mithilfe des detektierten Phasenbestandes konnte die Existenz einer Mischungslücke im quasibinären Phasendiagramm 2PbTe-AgSbTe2 nachgewiesen werden. Dabei bilden die Zusammensetzungen zwei der ermittelten Fremdphasen die Phasengrenzen. Die beobachtete spinodale Entmischung erzeugte eine extrem hohe Grenzflächendichte und kann somit ebenfalls einen Beitrag zur Senkung der Wärmeleitfähigkeit liefern. Für die Analyse der Mikrostruktur auf nm-Skala wurden aus der LAST-Matrix mithilfe der fokussierten Ionenstrahltechnik elektronentransparente Schnitte gefertigt. Abhängig von Temperbedingungen und dem Verhältnis von Silber und Antimon wurden auch hier fremdphasige Einschlüsse entdeckt. Dabei konnte ein optimaler Temperbereich von 500 bis 550 °C (bezogen auf einen hohen Gütewert) mit dem Auftreten dieser Einschlüsse korreliert werden. Eine allgemeine, direkte Zuordnung des Vorhandenseins von Nanostrukturen zu guten oder schlechten thermoelektrischen Eigenschaften konnte im Allgemeinen jedoch nicht nachgewiesen werden. Vielmehr wurden deutliche Hinweise gefunden, dass auch die Anordnung von Punktdefekten (Blei-Substitution durch Silber und Antimon) und ggf. Agglomerate aus Punktdefekten in der LAST-Matrix eine Rolle bei der Senkung der Wärmeleitfähigkeit spielen. Im hochaktuellen Entwicklungsgebiet selbstorganisierender Nanostrukturen mit Auswirkungen auf thermoelektrische Eigenschaften wurden substantielle Fortschritte bei der Entwicklung geeigneter, LAST-basierter Thermoelektrika für mittlere Einsatztemperaturen erzielt. Die gewonnenen Erkenntnisse dieser Arbeit zeigen Optionen zur Erzeugung hocheffizienter thermoelektrischer Bauelemente auf, wie unter anderem die bestätigte Stabilität bis zu relativ hohen Einsatztemperaturen (> 500 °C) zeigt.
5

Eddike, Driss. "Contribution à l'étude des systèmes Ag-Cu-Tl-Te et Cu-Bi-Se caractérisation thermoélectriques des matériaux /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37604801w.

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6

Perlt, Susanne [Verfasser], Thomas [Gutachter] Höche, and Kornelius [Gutachter] Nielsch. "Microstructure Analyses and Structure-Property Relationships of Ag(1-x)Pb(18)Sb(1+y)Te(20) / Susanne Perlt ; Gutachter: Thomas Höche, Kornelius Nielsch." Leipzig : Universitätsbibliothek Leipzig, 2013. http://d-nb.info/1238367240/34.

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7

Roberts, Jordan. "Telluride mineralogy at the Deer Horn Au-Ag-Te-(Bi-Pb-W) deposit, Lindquist Peak, west-central British Columbia : implications for the generation of tellurides." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63390.

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The Deer Horn property is located 150 km south of Smithers in west-central British Columbia and covers 51 km². The deposit is an intrusion-related polymetallic system enriched in Au-Ag-Te-W-Cu with lesser amounts of Bi-Pb-Zn-Mo; the Au and Ag are hosted in telluride minerals. The quartz-sulfide vein system containing the main zones of Au-Ag-Te mineralization and sericite alteration is found in the hanging wall of a local, spatially related thrust fault. The age of the sericite alteration is 56 ± 2 Ma. Biotite K-Ar ages of 57–48 Ma for the nearby Nanika granodiorite intrusive suite indicates that it is likely genetically responsible for the Au-Ag-Te mineralizing event. The telluride minerals are 0.1–525 μm and commonly form whole euhedral to subhedral grains or composite grains of Ag-, Bi-, Pb-, and Au-rich telluride minerals (e.g., hessite, tellurobismuthite, volynskite, altaite, and petzite). Panchromatic cathodoluminescence imaging revealed four generations of quartz. Locally, oscillatory zoning observed in quartz II suggests the participation of hydrothermal fluids. Fine-grained veinlets of quartz III and IV intersect quartz I and II, which is evidence of at least two shearing events; veinlets of calcite intersect all generations of quartz. Three types of fluid inclusions were observed: (1) aqueous liquid and vapour inclusions (L-V); (2) aqueous carbonic inclusions (L-L-V); and (3) carbonic inclusions (V-rich). Fluid inclusions that are thought to be primary or pseudosecondary and related to the telluride mineralization were tested with microthermometry. Homogenization temperatures are 130.0–240.5 °C for L-V inclusions and 268.0–336.4 °C for L-L-V inclusions. Four of eight aqueous carbonic inclusions had solid CO2 melting temperatures from –56.8 to –62.1 °C, indicating the presence of 0.5–13.2% dissolved methane in these inclusions. Sulfur isotope analysis of ³⁴S/³²S using 20 samples of pyrite was conducted. δ³⁴S readings are close to 0 (from –1.6 to 1.6 per mil) and confirm that the sulfur is very likely magmatic/igneous in origin.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
8

Holder, David S. "Geological and geochemical controls for epithermal Au-Ag-Te (Pb-Zn) mineralisation at Coranda-Hondol and the Brad-Sacaramb basin mineral district of western Romania." Thesis, Kingston University, 2016. http://eprints.kingston.ac.uk/37305/.

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The 'Golden Quadrilateral' of W. Romania is a rich mineralised magmatic province hosting major porphyry-Cu and epithermal Au-Ag deposits. The mineralisation is associated with extensive magmatism emplaced along a series of NW-SE trending pull-part basins (e.g. Brad-Sacaramb, Rosia Montana). These basins developed during the Miocene, owing to the opposite sense rotation of the ALCAPA and Tisza-Dacia micro-continents, which facilitated extension-related melting of the subduction modified sub-continental lithospheric mantle. The largest of these basins, the Brad-Sacaramb basin contains extensive calc-alkaline, amphibole-rich, porphyritic andesite and dacite volcanics and sub-volcanic intrusions. LA-ICP-MS U-Pb analysis of zircons indicate that these magmatic rocks were emplaced during the Mid-Miocene 9.7 - 13.1 Ma. The rocks display a temporal geochemical evolution from early "normal" island arc magmatism (13.0 - 11.3 Ma) to adakite-like, characterised by high Sr/Y and La/Yb ratios, emplaced after 11.4 Ma. This shift in the geochemistry resulted from the cessation of plagioclase fractional crystalisation in the adakite-like magmas, coupled with the onset of amphibole crystalisation in the lower crustal MASH zone, which depleted the melts in MREEE-HREE. This change in the crystalising assemblage may have related to an increase in the dissolved water content of the melts. High zircon Ce/CE[sup]* (Ce[sup]4+/Ce[sup]3+) and less negative Eu/Eu[sup]* indicate that the high water content of these melts was accompanies by highly oxidising conditions. These conditions may have been important in preventing early sulfide saturation, a process considered to be unfavourable for the formation of economic Au and Cu deposits. K-Ar analysis from hydrothermal illites indicate that lo low to intermediate sulfidation epithermal and porphyry-Cu mineralisation in the Brad-Sacaramb basin occurred between 9.7 and 12.3 Ma. The epithermal deposits typcially developed < 0.5 Myrs after the cessation of magmatism in the immediate vicinity. One of the most prospective deposits in the basin is the Coranda-Hondol deposit (~4.8 Moz at 1.4 g/t Au). Coranda-Hondol is a telluride-rice, intermediate sulfidication Au-Ag deposit, hosted by a series of andesitic stocks (emplaced ~12.6 Ma) and siliciclastic sedimentary formation. The deposit displays a variety of mineralisation styles with pervasive pyrite dissemenations and base-metal sulfide and sulfosalt-telluride -rich veinlets. Microthermonetry of fluid inclusions indicate that the mineralisation was facilitated by a dilute (<10 wt% NaCl) low temperature (~250[degrees]C) fluid. Stable isotopes ([delta][sup]18O[sub]fluid: 6.1 - 9.4 [parts per thousand], [delta]D[sub]fluid: -39.8 - -74.3) support a magmatic source for the fluid which mixed with meteoric waters during the waning stages of the hydrothermal system ([delta][sup]18O[sub]fluid: -0.3 - 1.6). Boiling of the ore fluid during brecciation events triggered the precious metal mineralisation. The Au is predominately hosted within the crystal lattice of textual complex and isotopicalle light ([delta][sup]34S: -19/4 - -6.5 [parts per thousand]) colloform pyrite grains (up to ~450 ppm) developed within these boiling zones.
9

Djiba, Aliou [Verfasser], and Ulrich [Akademischer Betreuer] Bismayer. "Porphyrische Cu-Mo-Au-Re und epithermale Au-Ag-Te Vererzungen der Insel Limnos, nordöstliche Ägäis, Griechenland : Mineralogie-Mineralchemie der hydrothermalen Alterationen und damit verbundene Vererzungen / Aliou Djiba ; Betreuer: Ulrich Bismayer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1196296103/34.

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10

Bruneau, Jean Michel. "Étude et réalisation de disques optiques ré-inscriptibles à changement de phase." Université Joseph Fourier (Grenoble ; 1971-2015), 1998. http://www.theses.fr/1998GRE10050.

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Dans le domaine de l'enregistrement reversible sur disque optique, la technologie changement de phase concurrence depuis peu la suprematie de l'enregistrement magneto-optique. Dans cette these sont abordes les aspects cles de l'enregistrement a changement de phase. Les alliages a base de tellure entrant dans l'elaboration de ces disques optiques doivent pouvoir passer de facon reversible d'un etat amorphe a un etat cristallin. L'utilisation de trois types de materiaux a ete envisagee. Il s'agit des alliages ternaires gesbte et insbte ainsi que de l'alliage quaternaire aginsbte. Une etude bibliographique des travaux effectues sur ces materiaux a changement de phase est presentee dans cette these. Diverses experimentations (caracterisation structurale, analyse de la cinetique de cristallisation) ont ete effectuees sur quelques compositions. Les comportements optique et thermique des systemes de couches minces utilises en enregistrement optique a changement de phase sont modelises. Les simulations numeriques se revelent etre un outil indispensable et permettent d'optimiser les proprietes du disque optique en ecriture et en lecture. Des prototypes de disques optiques re-inscriptibles a changement de phase sont realises. Ceux elabores a partir d'un alliage de composition ge#2sb#2te#5 donnent les meilleurs resultats. La derniere partie de cette these aborde la faisabilite de disques optiques a plusieurs niveaux d'information disposes sur un meme substrat. Des solutions sont proposees pour l'elaboration d'un disque comportant un niveau d'information pre-enregistre sur lequel est superpose un niveau d'information re-inscriptible. Le cas d'un disque optique a deux niveaux re-inscriptibles a changement de phase est aussi envisage. Ce document constitue une synthese sur l'enregistrement optique a changement de phase et les resultats obtenus permettent d'envisager des applications industrielles. Il ouvre aussi certaines perspectives sur les futures generations de disques optiques.
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Books on the topic "Ag₂Te":

1

D, Bliss James, and Geological Survey (U.S.), eds. Grade-tonnage and target-area models of Au-Ag-Te veins associated with alkalic rocks. [Menlo Park, CA]: U.S. Geological Survey, 1992.

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2

D, Bliss James, and Geological Survey (U.S.), eds. Grade-tonnage and target-area models of Au-Ag-Te veins associated with alkalic rocks. [Menlo Park, CA]: U.S. Geological Survey, 1992.

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D, Bliss James, and Geological Survey (U.S.), eds. Grade-tonnage and target-area models of Au-Ag-Te veins associated with alkalic rocks. [Menlo Park, CA]: U.S. Geological Survey, 1992.

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D, Bliss James, and Geological Survey (U.S.), eds. Grade-tonnage and target-area models of Au-Ag-Te veins associated with alkalic rocks. [Menlo Park, CA]: U.S. Geological Survey, 1992.

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s, Stelios A. Mouzake. Mia die ge se gia to ktisimo te s Ag. Sophias apo anekdoto cheirographo to 18ou aio na: To keimeno me eisago ge scholia, lexilogio. Athe na: Vivliopoleio to n Vivliophilo n, 1986.

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Marchandise, H. The certification of the impurity contents (Ag, As, Bi, Cd, Cu, Ni, Sb, Se, Sn, Te, Tl and Zn) in three grades of lead: Electrolytically refined lead BCR No 286, thermally refined lead BCR No 287, lead with added impurities BCR No 288. Luxembourg: Commission of the European Communities, 1985.

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Eisenmann, B., and H. Schäfer. Ag-Al-Cd-S ... Cu-Te-Yb. Springer, 1985.

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Grade-tonnage and target-area models of Au-Ag-Te veins associated with alkalic rocks. [Menlo Park, CA]: U.S. Geological Survey, 1992.

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Vandendriessche, S., B. Griepink, and K. Strijckmans. The Certification of Impurities (Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, Pb, Sb, Se, Sn, Te and Zn) in Copper: CRM 074. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1992.

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Book chapters on the topic "Ag₂Te":

1

Predel, B. "Ag-Te (Silver - Tellurium)." In Ac-Ag ... Au-Zr, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10793176_66.

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Franke, P., and D. Neuschütz. "Ag-Te (Silver - Tellurium)." In Binary Systems. Part 5: Binary Systems Supplement 1, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-45280-5_16.

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Moroz, M., F. Tesfaye, P. Demchenko, M. Prokhorenko, D. Lindberg, O. Reshetnyak, and L. Hupa. "Thermodynamic Properties of Layered Tetradymite-like Compounds of the Ag–Ge–Sb–Te System." In The Minerals, Metals & Materials Series, 275–87. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36556-1_23.

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Koneev, Rustam I., Arpay H. Turesebekov, Evgeniy N. Ignatikov, B. B. Vasilevsky, and R. R. Rakhimov. "Au-Ag-Se-Te mineral and geochemical systems in black shale-hosted deposits (Uzbekistan)." In Mineral Deposit Research: Meeting the Global Challenge, 1403–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_357.

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Aripov, Umid K. "Zonation of Au, Ag, Se and Te in orebodies from the Kochbulak gold-telluride deposit (Uzbekistan)." In Mineral Deposit Research: Meeting the Global Challenge, 1379–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_351.

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Predel, B. "As-Te (Arsenic - Tellurium)." In Ac-Ag ... Au-Zr, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10793176_203.

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Predel, B. "Au-Te (Gold - Tellurium)." In Ac-Ag ... Au-Zr, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10793176_253.

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Predel, B. "Al-Te (Aluminum - Tellurium)." In Ac-Ag ... Au-Zr, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10793176_127.

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Predel, B. "Am-Te (Americium - Tellurium)." In Ac-Ag ... Au-Zr, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10793176_153.

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Moroz, Mykola, Fiseha Tesfaye, Pavlo Demchenko, Myroslava Prokhorenko, Orest Pereviznyk, Bohdan Rudyk, Lyudmyla Soliak, Daniel Lindberg, Oleksandr Reshetnyak, and Leena Hupa. "Phase Equilibria in the Ag–Ge–Bi–Te System and Thermodynamic Properties of the nGeTe•mBi2Te3 (n, m = 1–4) Layered Compounds." In The Minerals, Metals & Materials Series, 60–73. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92381-5_7.

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Conference papers on the topic "Ag₂Te":

1

Schulz, Douglas L., Rosine Ribelin, Calvin J. Curtis, and David S. Ginley. "Particulate contacts to Si and CdTe: Al, Ag, Hg-Cu-Te, and Sb-Te." In National center for photovoltaics (NCPV) 15th program review meeting. AIP, 1999. http://dx.doi.org/10.1063/1.57967.

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Rangasami, C. "Phase preference in some Ag-In-Sb-Te alloys." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980790.

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Imanishi, Yusuke, and Toshihiro Nakaoka. "Morphology control of Ag-Te nanostructures by seed silver nanoparticles." In 2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS)]. IEEE, 2016. http://dx.doi.org/10.1109/iciprm.2016.7528657.

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Mongia, Geeta, and Promod K. Bhatnagar. "Crystallization study of Ag-In-Sb-Te optical recording film." In ITCom 2002: The Convergence of Information Technologies and Communications, edited by Ken Arnold, Guang R. Gao, and Sudipto Ghosh. SPIE, 2002. http://dx.doi.org/10.1117/12.472936.

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Jiang, Lai, and Edmund R. Nowak. "Magnetoresistance and electrical noise in silver chalcogenide Ag 2 Te." In SPIE's First International Symposium on Fluctuations and Noise, edited by Michael B. Weissman, Nathan E. Israeloff, and A. Shulim Kogan. SPIE, 2003. http://dx.doi.org/10.1117/12.496919.

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Mitkova, Maria, Elena Vateva, and Evgenia Skordeva. "Photothermal Recording in Thin Films of Se-Te-Ag Glasses." In Holography '89, edited by Yuri N. Denisyuk and Tung H. Jeong. SPIE, 1990. http://dx.doi.org/10.1117/12.963801.

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Kosuga, A., K. Kurosaki, H. Muta, and S. Yamanaka. "Thermoelectric properties of n-type Ag-Pb-Sb-Te compounds." In ICT 2005. 24th International Conference on Thermoelectrics, 2005. IEEE, 2005. http://dx.doi.org/10.1109/ict.2005.1519883.

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Unnithan, C. Harikuttan, L. Chippy, S. Jayakumar, P. Predeep, Mrinal Thakur, and M. K. Ravi Varma. "Thermal Behaviour of Ge-Te glass with Ag as dopant." In OPTICS: PHENOMENA, MATERIALS, DEVICES, AND CHARACTERIZATION: OPTICS 2011: International Conference on Light. AIP, 2011. http://dx.doi.org/10.1063/1.3643604.

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Sharma, Yagya D., and Promod K. Bhatnagar. "Ag-Sb-Te system for phase change optical data storage." In International Symposium on Optical Science and Technology, edited by Angela Duparr‰ and Bhanwar Singh. SPIE, 2002. http://dx.doi.org/10.1117/12.453720.

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Kumar, Anup, Pawan Heera, P. B. Barman, and Raman Sharma. "Frequency dependence of dielectric constants of Ag doped Se-Bi-Te system." In PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4810418.

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Reports on the topic "Ag₂Te":

1

Neyedley, K., J. J. Hanley, P. Mercier-Langevin, and M. Fayek. Ore mineralogy, pyrite chemistry, and S isotope systematics of magmatic-hydrothermal Au mineralization associated with the Mooshla Intrusive Complex (MIC), Doyon-Bousquet-LaRonde mining camp, Abitibi greenstone belt, Québec. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328985.

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Abstract:
The Mooshla Intrusive Complex (MIC) is an Archean polyphase magmatic body located in the Doyon-Bousquet-LaRonde (DBL) mining camp of the Abitibi greenstone belt, Québec. The MIC is spatially associated with numerous gold (Au)-rich VMS, epizonal 'intrusion-related' Au-Cu vein systems, and shear zone-hosted (orogenic?) Au deposits. To elucidate genetic links between deposits and the MIC, mineralized samples from two of the epizonal 'intrusion-related' Au-Cu vein systems (Doyon and Grand Duc Au-Cu) have been characterized using a variety of analytical techniques. Preliminary results indicate gold (as electrum) from both deposits occurs relatively late in the systems as it is primarily observed along fractures in pyrite and gangue minerals. At Grand Duc gold appears to have formed syn- to post-crystallization relative to base metal sulphides (e.g. chalcopyrite, sphalerite, pyrrhotite), whereas base metal sulphides at Doyon are relatively rare. The accessory ore mineral assemblage at Doyon is relatively simple compared to Grand Duc, consisting of petzite (Ag3AuTe2), calaverite (AuTe2), and hessite (Ag2Te), while accessory ore minerals at Grand Duc are comprised of tellurobismuthite (Bi2Te3), volynskite (AgBiTe2), native Te, tsumoite (BiTe) or tetradymite (Bi2Te2S), altaite (PbTe), petzite, calaverite, and hessite. Pyrite trace element distribution maps from representative pyrite grains from Doyon and Grand Duc were collected and confirm petrographic observations that Au occurs relatively late. Pyrite from Doyon appears to have been initially trace-element poor, then became enriched in As, followed by the ore metal stage consisting of Au-Ag-Te-Bi-Pb-Cu enrichment and lastly a Co-Ni-Se(?) stage enrichment. Grand Duc pyrite is more complex with initial enrichments in Co-Se-As (Stage 1) followed by an increase in As-Co(?) concentrations (Stage 2). The ore metal stage (Stage 3) is indicated by another increase in As coupled with Au-Ag-Bi-Te-Sb-Pb-Ni-Cu-Zn-Sn-Cd-In enrichment. The final stage of pyrite growth (Stage 4) is represented by the same element assemblage as Stage 3 but at lower concentrations. Preliminary sulphur isotope data from Grand Duc indicates pyrite, pyrrhotite, and chalcopyrite all have similar delta-34S values (~1.5 � 1 permille) with no core-to-rim variations. Pyrite from Doyon has slightly higher delta-34S values (~2.5 � 1 permille) compared to Grand Duc but similarly does not show much core-to-rim variation. At Grand Duc, the occurrence of Au concentrating along the rim of pyrite grains and associated with an enrichment in As and other metals (Sb-Ag-Bi-Te) shares similarities with porphyry and epithermal deposits, and the overall metal association of Au with Te and Bi is a hallmark of other intrusion-related gold systems. The occurrence of the ore metal-rich rims on pyrite from Grand Duc could be related to fluid boiling which results in the destabilization of gold-bearing aqueous complexes. Pyrite from Doyon does not show this inferred boiling texture but shares characteristics of dissolution-reprecipitation processes, where metals in the pyrite lattice are dissolved and then reconcentrated into discrete mineral phases that commonly precipitate in voids and fractures created during pyrite dissolution.
2

Leybourne, M. I., J. M. Peter, M A Schmidt, D. Layton-Matthews, A. Voinot, and L. Mathieu. Geochemical evidence for a magmatic contribution to the metal budget of the Windy Craggy Cu-Co(±Zn) volcanogenic massive-sulfide deposit, northwestern British Columbia. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328018.

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Volcanogenic massive-sulfide (VMS) deposits may have had metal contributions from magmatic degassing and leaching of footwall rocks. The Windy Craggy Cu-Co-Zn VMS deposit in northwestern British Columbia may include magmatic contributions, based on laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) of fluid inclusions (enriched in Sb, Sn, and Bi) and lithogeochemistry. Sulfide-mineral trace-element abundances in the massive-sulfide orebody, underlying stockwork zone, gold zone, and altered and unaltered mafic rock and argillite were analyzed by LA-ICP-MS. Elevated Au, W, As, Bi, Sb, Se, Te, Tl, Ag, Co, and Mo contents occur within the gold and/or stockwork zones. Increasing 'magmatic metals' with increasing Co/Ni values suggest direct magmatic contribution to the deposit. Covariation of Co with these so-called 'magmatic elements' indicates that it, too, may be of magmatic origin, sourced via fluids exsolved from a crystallizing magma; however, evidence from the composition of rocks and sulfide minerals from Windy Craggy and other VMS deposits suggests that there is probably no meaningful distinction between hydrothermal leaching and direct magmatic contributions and that most - if not all - fluids that form VMS deposits should be termed 'magmatic-hydrothermal'.
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Anders, E., R. Wolf, J. W. Morgan, M. Ebihara, A. B. Woodrow, M. J. Janssens, and J. Hertogen. Radiochemical neutron activation analysis for 36 elements in geological material: Au, Ag, Bi, Br, Cd, Cs, Ge, In, Ir, Ni, Os, Pd, Rb, Re, Sb, Se, Sn, Te, Tl, U, and Zn as well as Sc, Y, and REE. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/6843488.

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