Crystallographic and Magnetic Properties of Double Perovskite Oxide Ba2−xSrxFeMoO6

In order to study on the change of magnetic properties according to the tolerance factor, polycrystalline single phase double perovskite oxide Ba 2− x ;Sr x FeMoO 6 ( x = 0.0, 0.5, 1.0, 1.5, 2.0) are prepared. The crystallographic and magnetic properties have been studied by X-ray diffraction, magne...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2019, 75(6), , pp.466-470
Main Authors: Kim, Sung Baek, Hahn, Eun Joo, Kim, Chul Sung
Format: Article
Language:English
Subjects:
Mathematical and Computational Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Theoretical
물리학
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Summary:In order to study on the change of magnetic properties according to the tolerance factor, polycrystalline single phase double perovskite oxide Ba 2− x ;Sr x FeMoO 6 ( x = 0.0, 0.5, 1.0, 1.5, 2.0) are prepared. The crystallographic and magnetic properties have been studied by X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. The Ba 2 FeMoO 6 is analyzed as a cubic structure with Fe 3+ and Mo 5+ ions ordered at the B-sites. As the x value increases from the cubic structure, the lattice constant decreases more rapidly in the a-b -axis direction than in the c -axis. So that the tetragonal structure starts from x = 1.0. The Curie temperature of the Ba 2 FeMoO 6 and Sr 2 FeMoO 6 were 345 K and 425 K, respectively. As the value of x increases, the Curie temperature increases linearly. In addition, the magnetic hyperfine field fluctuation due to relaxation effects are observed in the Mössbauer spectrum of all series samples.
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.75.466