Phase transition changes in Bi4CexV2-xO11-(x/2)-δ system

被引：23
|
作者：
Al-Areqi, Niyazi A. S. [1 ]
Beg, Saba [1 ]
机构：
[1] Aligarh Muslim Univ, Dept Chem, Aligarh 202002, Uttar Pradesh, India
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 115卷 / 01期
关键词：
BIMEVOX; Phase transition; DEFECT STRUCTURE; BIMEVOX SERIES; ION CONDUCTORS; X-RAY; OXIDE; ELECTROLYTES; BI4V2O11; CONDUCTIVITY; TEMPERATURE; IV;
D O I：
10.1016/j.matchemphys.2009.01.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Samples of Bi4CexV2-xO11-(x/2)-delta were prepared by the conventional solid-state reactions. The phase transition changes were studied by combining results obtained from high temperature X-ray powder diffraction (HT-XRPD), differential thermal analysis (DTA) and conductivity measurements. For x = 0.15 composition, the phase transitions; alpha <-> beta and beta <-> gamma were clearly evident in the temperature ranges 423-450 and 533-550 degrees C, respectively. Although no subtle change in variation of the unit cell parameters was observed for x = 0.25 composition, the Arrhenius plot and DTA thermogram showed evidence of gamma' <-> gamma phase transition in the temperature range 450-500 degrees C. (C) 2009 Elsevier B.V. All rights reserved.
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收藏
页码：5 / 8
页数：4
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