X-ray diffraction study of phase transitions in Na3Sc2(PO4)3 and Ag3Sc2(PO4) single crystals in temperature range from 160 to 500 K

被引：8

作者：

Shilov, GV ^{[1
]}

Atovmyan, LO ^{[1
]}

Kovalenko, VI ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2005年 / 50卷 / 01期

关键词：

Phase Transition; Diffraction Study; Monoclinic Phase; Superionic State;

D O I：

10.1134/1.1857256

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Two phase transitions are revealed for the first time in Ag3SC2(PO4)(3) single crystals in the vicinity of the temperatures 303 and 165-180 K. It is established that the phase transition at 303 K corresponds to the well-known phase transition to the superionic state in Na3SC2(PO4)(3) single crystals in the temperature range 423-433 K, whereas the phase transition observed in the temperature range 170-180 K corresponds to the phase transition from the rhombohedral to monoclinic phase at about 320 K in the monoclinic Na3Sc2(PO4)(3) single crystals. It is also established that rhombohedral Na3SC2(PO4)(3) single crystals undergo the second phase transition. (C) 2005 Pleiades Publishing, Inc.

引用

页码：115 / 119

页数：5

共 12 条

[1]

Atovmyan L. O., 1983, ELEKTROKHIMIYA, V19, P933

[2]

ATOVMYAN LO, 1995, KOORDINATS KHIM+, V21, P585

[3]

ATOVMYAN LO, 1979, ZH STRUKT KHIM, V20, P940

[4]

BOEHM L, 1981, SOLID STATE IONICS, P311

[5] DISORDER OF TETRAHEDRA IN NASICON-TYPE STRUCTURE .1. NA3SC2(PO4)3 - STRUCTURES AND ION ION CORRELATIONS [J].

COLLIN, G ;

COMES, R ;

BOILOT, JP ;

COLOMBAN, P .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1986, 47 (09) :843-854

[6]

Efremov V. A., 1978, Soviet Physics - Crystallography, V23, P393

[7]

GUSAKOVSKAYA IG, 1994, ZH NEORG KHIM+, V39, P1281

[8]

Gusakovskaya IG, 1997, ZH OBSHCH KHIM+, V67, P592

[9]

HONG HYP, 1978, INT C FAST ION TRANS, P431

[10]

LAZORIAK BI, 1980, DOKL AKAD NAUK SSSR+, V250, P861

← 1 2 →