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Magnetic phase transitions and magnetocaloric effect in the Fe-doped MnNiGe alloys |
Zhang Cheng-Liang(张成亮)a)†, Wang Dun-Hui(王敦辉)b), Chen Jian(陈健)a),Wang Ting-Zhi(王廷志)a), Xie Guang-Xi(谢广喜)a), and Zhu Chun(朱纯)a) |
a School of Science, Jiangnan University, Wuxi 214122, China; b National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Abstract The magnetic phase transition and magnetocaloric effects in Fe-doped MnNiGe alloys are investigated. The substitution of Fe for Ni decreases the structural transition temperature remarkably, resulting in the magnetostructural transition occurring between antiferromagnetic and ferromagnetic states in MnNi1 - xFexGe alloy. Owing to the enhanced ferromagnetic coupling induced by the substitution of Fe, metamagnetic behaviour is also observed in TiNiSi-type phase of MnNi1 - xFexGe alloys at temperature below the structural transition temperature.
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Received: 23 March 2011
Revised: 23 April 2011
Accepted manuscript online:
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PACS:
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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75.50.Ee
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(Antiferromagnetics)
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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Cite this article:
Zhang Cheng-Liang(张成亮), Wang Dun-Hui(王敦辉), Chen Jian(陈健), Wang Ting-Zhi(王廷志), Xie Guang-Xi(谢广喜), and Zhu Chun(朱纯) Magnetic phase transitions and magnetocaloric effect in the Fe-doped MnNiGe alloys 2011 Chin. Phys. B 20 097501
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