Co-occurrence of magnetic and structural transitions in the Heusler alloy Ni53Mn25Ga22

被引：66

作者：

Jiang, CB ^{[1
]}

Feng, G ^{[1
]}

Xu, HB ^{[1
]}

机构：

[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 09期

关键词：

D O I：

10.1063/1.1457528

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A co-occurrence of magnetic and structural transitions was observed in a nonstoichiometric Ni53Mn25Ga22 alloy which undergoes a reverse martensitic transformation from ferromagnetic martensite to paramagnetic austenite at a magnetic transition temperature (134 degreesC) higher than the Curie temperature of the stoichiometric Ni2MnGa alloy (103 degreesC). The effect of the magnetic field on the phase transition temperature was found to be two orders of magnitude greater in the present alloy than in Ni2MnGa due to the absence of the ferromagnetic state in austenite. This may open the possibility of utilizing NiMnGa alloys at a low magnetic field. (C) 2002 American Institute of Physics.

引用

页码：1619 / 1621

页数：3

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