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

页码：1105 / 1109

页数：5

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