Phase transitions in a Cs2−xK1+xBiCl6 solid solution期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Phase transitions in a Cs_2−xK_1+xBiCl₆ solid solution

Authors:	P. Barbier M. Drache G. Mairesse J. Ravez

Affiliation:	Laboratoire de Cristallochimie et Physicochimie du Solide, Université des Sciences et Techniques de Lille, 59655-Villeneuve d''Ascq Cedex, France;Laboratoire de Chimie du Solide du CNRS, 356, cours de la Libération, 33405-Talence Cedex, France

Abstract:	A solid solution with a Cs_2?xK_1+xBiCl₆ (0 ≤ x ≤ 1) formulation and an elpasolite-related structure was prepared. At room temperature the symmetry is cubic (Fm3m) for x = 0 and triclinic $(P I)$ for x ≠ 0. For 0 ≤ x ≤ 1, various techniques enabled us to detect a phase transition of the ferroelastic-paraelastic type at t_c (°C) temperature. The t_c and ΔH_{t_c} values are correlated to the size of the alkali ions.

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