Magnetoelastic behaviour of Gd5Ge4

被引：85

作者：

Magen, C

Morellon, L

Algarabel, PA

Marquina, C

Ibarra, MR

机构：

[1] Univ Zaragoza, Dept Fis Mat Condensada, Zaragoza 50009, Spain

[2] Univ Zaragoza, Inst Ciencia Mat Aragon, Zaragoza 50009, Spain

[3] Consejo Super Investigac Cient, Zaragoza 50009, Spain

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 14期

关键词：

D O I：

10.1088/0953-8984/15/14/314

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A complete investigation of the complex magnetic behaviour of Gd5Ge4 by means of linear thermal expansion and magnetostriction measurements (5300 K, 0-120 kOe) has been carried out. Our results support the suggested existence in this system of a coupled crystallographic-magnetic transition from a Gd5Ge4-type Pnma (antiferromagnetic) to a Gd5Si4-type Pnma (ferromagnetic) state. Strong magnetoelastic effects are observed at the field-induced first-order magnetic-martensitic transformation. A revised magnetic and crystallographic H-T phase diagram is proposed.

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页码：2389 / 2397

页数：9

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