Structural and magnetic phase transitions in shape-memory alloys Ni2+xMn1-xGa

被引：449

作者：

Vasil'ev, AN ^{[1
]}

Bozhko, AD

Khovailo, VV

Dikshtein, IE

Shavrov, VG

Buchelnikov, VD

Matsumoto, M

Suzuki, S

Takagi, T

Tani, J

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

[2] Russian Acad Sci, Inst Radioengn & Elect, Moscow 103907, Russia

[3] Chelyabinsk State Univ, Chelyabinsk 454021, Russia

[4] Tohoku Univ, Inst Adv Mat Proc, Sendai, Miyagi 98077, Japan

[5] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi 98077, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1103/PhysRevB.59.1113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Heusler-type alloy Ni2+xMn1-xGa exhibits well defined shape memory properties in a ferromagnetic state, which means that the martensitic transition temperature is lower than the Curie point of this material. The change of composition makes these characteristic temperatures approach each other. To study this behavior, the measurements of specific heat, ac magnetic susceptibility, and de resistivity were performed. The phase diagram of the cubic ferromagnet describing possible structural and magnetic transitions is obtained theoretically. This diagram is compared with experimental data on Ni2+xMn1-xGa. An estimate is given of the magnetic-field influence on the temperature of martensitic transformation in the studied alloys. [S0163-1829(99)09701-5].

引用

页码：1113 / 1120

页数：8

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