Structure and Magnetic Phase Diagrams of Multiferroic Mn2GeO4
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概要
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Crystallographic structure and magnetic phase diagrams were investigated for single crystals of multiferroic Mn2GeO4 showing successive magnetic transitions at T_{\text{N1}} = 47 K, T_{\text{N2}} = 17 K, and T_{\text{N3}} = 5.5 K. Substantial anomalies of lattice distortion were observed at the respective magnetic transition temperatures. We also found that the phase boundary at T_{\text{N2}} remarkably shifts by applying a magnetic field H and strongly depends on the direction of H. Possible origins of the observed phenomena are discussed from the perspective of magnetic interactions and relevant magnetostriction in Mn2GeO4 with the olivine structure.
- 2012-10-15
著者
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Kimura Tsuyoshi
Division Of Biofunctional Molecules Institute Of Biomaterials And Bioengineering Tokyo Medical And D
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Honda Takashi
Division Of Cardiology Saiseikai Kumamoto Hospital
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Nakamura Hiroyuki
Division Of Cardiology Sakaide Municipal Hospital
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Wakabayashi Yusuke
Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531
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Honda Takashi
Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Kimura Tsuyoshi
Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Nakamura Hiroyuki
Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Ishiguro Yuki
Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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