| Инд. авторы: | Palyanova G.A., Seryotkin Y.V., Kokh K.A., Bakakin V.V. |
| Заглавие: | Isomorphism and solid solutions among Ag- and Au-selenides |
| Библ. ссылка: | Palyanova G.A., Seryotkin Y.V., Kokh K.A., Bakakin V.V. Isomorphism and solid solutions among Ag- and Au-selenides // Journal of Solid State Chemistry. - 2016. - Vol.241. - P.157-163. - ISSN 0022-4596. - EISSN 1095-726X. |
| Внешние системы: | DOI: 10.1016/j.jssc.2016.06.008; SCOPUS: 2-s2.0-84976315456; WoS: 000380733900022; |
| Реферат: | eng: Au-Ag selenides were synthesized by heating stoichiometric mixtures of elementary substances of initial compositions Ag2-xAuxSe with a step of x=0.25 (0≤x≤2) to 1050 °C and annealing at 500 °C. Scanning electron microscopy, optical microscopy, electron microprobe analysis and X-ray powder diffraction methods have been applied to study synthesized samples. Results of studies of synthesized products revealed the existence of three solid solutions with limited isomorphism Ag Au: naumannite Ag2Se - Ag1.94Au0.06Se, fischesserite Ag3AuSe2 - Ag3.2Au0.8Se2 and gold selenide AuSe - Au0.94Ag0.06Se. Solid solutions and AgAuSe phases were added to the phase diagram of Ag-Au-Se system. Crystal-chemical interpretation of Ag-Au isomorphism in selenides was made on the basis of structural features of fischesserite, naumannite, and AuSe. © 2016 Elsevier Inc.
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| Ключевые слова: | Structure features; Structural feature; Stoichiometric mixtures; Selenides; Isomorphism; Initial composition; Fischesserite; X ray powder diffraction; Solid solutions; Silver alloys; Silver; Selenium compounds; Scanning electron microscopy; Microanalysis; Gold; Electron probe microanalysis; Structure features; Solid solutions (Ag,Au)2Se; Silver; Isomorphism; Gold; Set theory; X-ray powder; |
| Издано: | 2016 |
| Физ. характеристика: | с.157-163 |