VIBRATIONAL-SPECTRA AND PHASE-TRANSITIONS OF SILVER-TRANSITION METAL CHALCOGENIDES OF ARGYRODITE FAMILY

被引：2

作者：

ISHII, M

WADA, H

机构：

[1] National Institute for Research in Inorganic Materials, Tsukuba-shi, Ibaraki, 305

来源：

SOLID STATE IONICS | 1995年 / 79卷

关键词：

CHALCOGENIDE; TONIC CONDUCTOR; INFRARED SPECTRA; PHASE TRANSITION;

D O I：

10.1016/0167-2738(95)00024-Z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Infrared transmission spectra of the ionic conductors Ag7TaS6, Ag7NbS6 and Ag7-xTaSe6-xIx (0 less than or equal to x less than or equal to 1), which belong to the ''argyrodite family'' phase, have been studied in the temperature range between 300 and 80 K. As for Ag7TaS6, Ag7NbS6 and Ag7-xTaSe6-xIx (x=0.2, 0.3 and 0.4), the observed M-X (M=Ta, Nb; X=S, (Se, I)) stretching peaks have shown the shifts or the splittings, which suggest the phase transitions, with decreasing temperatures. The results obtained have been interpreted as compared with those of Raman spectroscopic studies and powder X-ray diffraction studies.

引用

页码：26 / 29

页数：4

共 10 条

[1]

HERZBERG G, 1945, INFRARED RAMAN SPECT, P100

[2] RAMAN-SPECTROSCOPIC STUDIES OF SILVER-TANTALUM SULFIDE, SILVER-NIOBIUM SULFIDE AND SILVER-TANTALUM SELENIDE WITH ARGYRODITE STRUCTURES [J].