A phenomenological description of the first-order transition in the Gd5(SixGe1-x)4 (0.24 < x < 0.5) alloys

被引：13

作者：

Teng, BH ^{[1
]}

Tu, MJ

Chen, YF

Tang, JK

机构：

[1] Sichuan Univ, Dept Appl Phys, Chengdu 610065, Peoples R China

[2] Sichuan Univ, Dept Met Mat Engn, Chengdu 610065, Peoples R China

[3] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China

[4] Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 25期

关键词：

D O I：

10.1088/0953-8984/14/25/317

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

With the help of the Landau-Devonshire theory, in this paper we produce a good phenomenological description of the first-order magnetocrystalline transition that occurs in the Gd-5(SixGe1-x)(4) (0.24 < x < 0.5) alloys, and derive the magnetic phase diagram in a magnetic field versus temperature presentation. The description reproduces not only the field-induced magnetic transition and the temperature-induced transition, but also the magnetic hysteresis and the thermal hysteresis. Also, it gives the critical external field and the critical temperature for the magnetic hysteresis and the thermal hysteresis.

引用

页码：6501 / 6507

页数：7

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A phenomenological description of the first-order transition in the Gd5(SixGe1-x)4 (0.24 &lt; x &lt; 0.5) alloys

A phenomenological description of the first-order transition in the Gd5(SixGe1-x)4 (0.24 < x < 0.5) alloys