HIGH-TEMPERATURE X-RAY-DIFFRACTION STUDY ON STABILITY OF THE INFINITE-LAYER SRCUO2

被引：5
|
作者：
ZHOU, XJ
DONG, C
WU, F
CHEN, H
CHE, GC
YAO, YS
ZHAO, ZX
机构：
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1994年 / 112卷 / 01期
关键词：
D O I：
10.1006/jssc.1994.1291
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The stability of the infinite-layer SrCuO2 upon heating in air has been investigated by high-temperature X-ray diffraction. Above 300 degrees C the infinite-layer SrCuO2 reacted gradually with CO2 in air to form SrCO3; at a temperature over 400 degrees C, the infinite-layer SrCuO2 transformed into orthorhombic SrCuO2, with an abrupt decrease of the amount of the infinite-layer phase in the sample. The lattice parameters a and c of the infinite-layer SrCuO2 showed different thermal expansion coefficients, i.e,, da/dT = 3.329 x 10(-5) and dc/dT = 5.801 x 10(-5) Angstrom/degrees C. (C) 1994 Academic Press, Inc.
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页码：211 / 213
页数：3
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