Abstract
A series of La1−x SrxFeO3−δ 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°C) in the course of cooling.
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Original Russian Text Copyright © 2007 by A. N. Nadeev, S. V. Tsybulya, A. N. Shmakov, G. N. Kryukova, I. S. Yakovleva, and L. A. Isupova
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Translated from Zhurnal Strukturnoi Khimii, Vol. 48, No. 6, pp. 1170–1174, November–December, 2007.
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Nadeev, A.N., Tsybulya, S.V., Shmakov, A.N. et al. High-temperature studies of La1−x SrxFeO3−δ solid solutions using synchrotron radiation. J Struct Chem 48, 1105–1109 (2007). https://doi.org/10.1007/s10947-007-0177-7
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DOI: https://doi.org/10.1007/s10947-007-0177-7