The phase diagrams of Ni-Mn-Ga alloys in the magnetic field

被引：7
|
作者：
Buchelnikov, V. D. [1 ]
Taskaev, S. V.
Zagrebin, M. A.
Ermakov, D. I.
Koledov, V. V.
Shavrov, V. G.
Takagi, T.
机构：
[1] Chelyabinsk State Univ, Chelyabinsk 454021, Russia
[2] RAS, Inst Radioengn & Elect, Moscow 125009, Russia
[3] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 313卷 / 02期
基金：
日本学术振兴会; 俄罗斯基础研究基金会;
关键词：
ferromagnetic shape memory alloys; structural and magnetic phase transitions; critical point;
D O I：
10.1016/j.jmmm.2007.01.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With the help of the Ginzburg-Landau theory the temperature-magnetic field phase diagrams of Heusler alloys Ni-Mn-Ga are theoretically investigated. The influence of the parameters of the magnetoelastic constants and elastic moduli on the phase diagrams are discussed. It is shown that with the determined combination of the phenomenological parameters, the critical magnetic field for the phase transition appears. The theoretically predicted value of the critical magnetic field is possible to be achieved in the experiment with the help of modern magnetic field sources. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：312 / 316
页数：5
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