Magnetic Phase Transition of MnBi under High Magnetic Fields and High Temperature
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- Koyama Keiichi
- High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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- Onogi Tetsuya
- High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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- Mitsui Yoshifuru
- High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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- Nakamori Yuko
- Institute for Materials Research, Tohoku University
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- Orimo Shin-ichi
- Institute for Materials Research, Tohoku University
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- Watanabe Kazuo
- High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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Magnetization measurements and differential thermal analysis (DTA) of polycrystalline MnBi were carried out in magnetic fields up to 14 T and in 300–773 K, in order to investigate the magnetic phase transition. The magnetic phase transition temperature (Tt) at a zero magnetic field is 628 K and linearly increases with increasing fields up to 14 T at the rate of 2 KT−1. A metamagnetic transition between the paramagnetic and field-induced ferromagnetic states was observed just above Tt. The exothermic and endothermic peaks were detected in the magnetic field dependence of DTA signals in 626–623 K, which relates to the metamagnetic transition. The obtained results were discussed on the basis of a mean field theory.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 48 (9), 2414-2418, 2007
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204250046720
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- NII論文ID
- 10019853698
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD2sXht1WntLrO
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 8885232
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可