Structural Characterization of the Complex Perovskites Ba1−xLaxTi1−xCrxO3 |
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Authors: | Guobao Li Yoshiaki UesuKay Kohn |
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Institution: | b Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japana College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China |
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Abstract: | The series Ba1−xLaxTi1−xCrxO3 (0≤x≤1) was synthesized at 1400°C for about 60 h. Their structure was carefully analyzed by the use of powder X-ray diffraction and Rietveld analysis software GSAS (General Structure Analysis System). Four solid solutions are found in this series: tetragonal solid solution Ba1−xLaxTi1−xCrxO3 (0≤x≤0.029), cubic solid solution Ba1−xLaxTi1−xCrxO3 (0.0365≤x≤0.600), rhombohedral solid solution Ba1−xLaxTi1−xCrxO3 (0.700≤x≤0.873), and orthorhombic solid solution Ba1−xLaxTi1−xCrxO3 (0.956≤x≤1). There are corresponding two-phase regions between the adjacent two solid solutions. The detailed lattice parameters are presented. The relationship between the lattice parameters and the composition of the solid solutions is developed. |
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