| Инд. авторы: | Seryotkin Y.V., Palyanova G.A., Kokh K.A. |
| Заглавие: | Sulfur-selenium isomorphous substitution and polymorphism in the Ag-2(S,Se) series |
| Библ. ссылка: | Seryotkin Y.V., Palyanova G.A., Kokh K.A. Sulfur-selenium isomorphous substitution and polymorphism in the Ag-2(S,Se) series // Journal of Alloys and Compounds. - 2015. - Vol.639. - P.89-93. - ISSN 0925-8388. - EISSN 1873-4669. |
| Внешние системы: | DOI: 10.1016/j.jallcom.2015.03.112; SCOPUS: 2-s2.0-84925854755; WoS: 000353823800015; |
| Реферат: | eng: Ag2S-Ag2Se chalcogenides have been synthesized by heating stoichiometric mixtures of elementary substances in vacuum sealed quartz vessels. Optical microscopy, scanning electron microscopy, X-ray powder diffraction with high-temperature experiments and X-ray single-crystal method were applied to study synthesized silver sulfoselenides. The synthesized silver sulfoselenides are homogeneous under optical and scanning electron microscope. At room temperature, two Ag2S1 Se-x(x) polymorphs - monoclinic and orthorhombic - coexist in the interval of 0.6 < x < 0.8. Compositional gap between two solid solutions is absent. At higher temperature, an intermediate monoclinic phase was observed in the range of Ag2S0.25Se0.75-Ag2S0.175Se0.825. (C) 2015 Elsevier B.V. All rights reserved.
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| Ключевые слова: | MINERALS; GOLD; SOLID-SOLUTIONS; SILVER SULFIDES; PHASE-TRANSITION; CRYSTAL-STRUCTURE; SYSTEM AG2S-AG2SE; DEPOSIT; LOW-TEMPERATURE FORM; Structure features; Phase transformations; Polymorphism; Solid-solutions Ag-2(S,Se); Isomorphism; AG-AU-S; |
| Издано: | 2015 |
| Физ. характеристика: | с.89-93 |