High-temperature studies of La1-xSrxFeO3-δ solid solutions using synchrotron radiation

被引：9
|
作者：
Nadeev, A. N. [1 ]
Tsybulya, S. V. [1 ,2 ]
Shmakov, A. N. [1 ]
Kryukova, G. N. [3 ]
Yakovleva, I. S. [1 ]
Isupova, L. A. [1 ]
机构：
[1] Russian Acad Sci, GK Boreskov Inst Catalysis, Siberian Div, Novosibirsk, Russia
[2] Novosibirsk State Univ, Berlin, Germany
[3] GNF eV, Berlin, Germany
来源：
JOURNAL OF STRUCTURAL CHEMISTRY | 2007年 / 48卷 / 06期
关键词：
perovskite; morphotropic phase transition; synchrotron radiation;
D O I：
10.1007/s10947-007-0177-7
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of La1-x SrxFeO3-delta samples with a perovskite structure were investigated by high-temperature X-ray analysis using synchrotron radiation. In this series, one can observe a morphotropic phase transition (0.3 <= x <= 0.4) from the orthorhombic (0 <= x < 0.3) to cubic (0.4 < x <= 0.75) modification. The samples from the morphotropic transition region (MTR) at room temperature have a highly disordered microblock structure related to their phase heterogeneity; according to high-temperature X-ray analysis data, this is the result of particle stratification of the high-temperature homogeneous solid solution formed at the temperature of the synthesis (1200 degrees C) in the course of cooling.
引用
收藏
页码：1105 / 1109
页数：5
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