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

作　　者：张成亮 王敦辉 陈健 王廷志 谢广喜 朱纯 

机构地区：[1]School of Science,Jiangnan University [2]National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University

出　　处：《Chinese Physics B》2011年第9期8-11,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.50701022 and 50831006)

摘　　要：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.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.

关 键 词：magnetostructural transition metamagnetic magnetocaloric effect 

分 类 号：O482.5[理学—固体物理]