Magnetic phase transitions and magnetocaloric effect in the Fe-doped MnNiGe alloys

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...

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Published inChinese physics B Vol. 20; no. 9; pp. 8 - 11
Main Author 张成亮 王敦辉 陈健 王廷志 谢广喜 朱纯
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2011
Subjects
Alloys
Ferromagnetism
Ferrous alloys
Iron
Joining
Nickel
Phase transformations
Transition temperature
反铁磁
合金结构
磁热效应
磁相变
转变温度
铁掺杂
铁磁耦合
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/9/097501

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Summary: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 MnNil_χFexGe alloy. Owing to the enhanced ferromagnetic coupling induced by the substitution of Fe, metamagnetic behaviour is also observed in TiNiSi-type phase of MnNil-xFezGe alloys at temperature below the structural transition temperature.
Bibliography:magnetostructural transition, metamagnetic, magnetocaloric effect
Zhang Cheng-Liang Wang Dun-Hui Chen Jian, Wang Ting-Zhi Xie Guang-Xi and Zhu Chun 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
11-5639/O4
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 MnNil_χFexGe alloy. Owing to the enhanced ferromagnetic coupling induced by the substitution of Fe, metamagnetic behaviour is also observed in TiNiSi-type phase of MnNil-xFezGe alloys at temperature below the structural transition temperature.
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/9/097501