Phase transitions in the ferromagnetic alloys Ni2+xMn1-xGa

被引：35

作者：

Bozhko, AD ^{[1
]}

Vasil'ev, AN

Khovailo, VV

Buchel'nikov, VD

Dikshtein, IE

Seletskii, SM

Shavrov, VG

机构：

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

[2] Chelyabinsk State Univ, Chelyabinsk 454021, Russia

[3] Russian Acad Sci, Inst Radio Engn & Elect, Moscow 103907, Russia

来源：

JETP LETTERS | 1998年 / 67卷 / 03期

关键词：

D O I：

10.1134/1.567655

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The phase diagram of the cubic ferromagnetic shape-memory alloy Ni2+xMn1-xGa is constructed theoretically for the case when the Curie temperature is close to the structural transition temperature. This diagram agrees well with the experimental data obtained from resistance and magnetic susceptibility measurements. It is shown that the transition from the paramagnetic cubic phase to the ferromagnetic tetragonal phase can be second-order or first-order. (C) 1998 American Institute of Physics.

引用

页码：227 / 232

页数：6

共 5 条

[1] EXTERNAL-FIELD IN THE LANDAU THEORY OF A WEAKLY DISCONTINUOUS PHASE-TRANSITION - PRESSURE EFFECT IN THE MARTENSITIC TRANSITIONS [J].

FRADKIN, MA .

PHYSICAL REVIEW B, 1994, 50 (22) :16326-16339

[2]

GUFMAN YM, 1982, STRUCTURAL PHASE TRA

[3]

Izyumov Yu. A., 1984, Phase Transitions and Symmetry of Crystals

[4]

Vasil'ev A. N., 1994, International Journal of Applied Electromagnetics in Materials, V5, P163

[5] MAGNETIC ORDER AND PHASE-TRANSFORMATION IN NI2MNGA [J].

WEBSTER, PJ ;

ZIEBECK, KRA ;

TOWN, SL ;

PEAK, MS .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1984, 49 (03) :295-310

← 1 →