Physical properties of double perovskite compounds ALaVMoO6 (A=Ca, Sr, Ba)—a possible half-metallic antiferromagnetic system |
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Authors: | Masatomo Uehara Motoya Yamada Yoshihide Kimishima |
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Institution: | Department of Physics, Faculty of Engineering, Yokohama National University, 79-1 Tokiwadai, Hodogaya-ku Yokohama 240-8501, Japan |
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Abstract: | Double perovskite compounds ALaVMoO6 (A=Ca, Sr, Ba) have been synthesized and their electrical and magnetic properties have been investigated. Magnetization measurements have indicated the possible antiferromagnetic transitions at 120 and 130 K for A=Ca and Sr samples, respectively. Electrical resistivity ρ for this system shows metallic temperature dependence from 300 to 20 K, though the sample with A=Ca shows weak semiconducting behavior in the low temperature region (<70 K). Considering the magnetic and electrical properties and assuming the V3+S=1 and Mo4+S=1 valence and spin states, the samples with A=Ca and Sr can be promising candidates for half-metallic antiferromagnets. |
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Keywords: | 75 50 &minus y 75 50 Ee 72 80 &minus r |
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