Structure and magnetic entropy change of suck-cast Gd60Co26Al6Ge8 alloy

被引：1

作者：

Fu, H. ^{[1
]}

Yu, H. J. ^{[1
]}

Zeng, Z. M. ^{[2
]}

Zhou, W. L. ^{[2
]}

Zu, X. T. ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China

[2] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 06期

关键词：

Bulk metallic glass; Composite; Magnetic entropy change; BULK METALLIC-GLASS; ENHANCED PLASTICITY; TRANSITION;

D O I：

10.1016/j.jmmm.2008.09.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Gd60Co26Al6Ge8 alloy has been prepared by the copper-mold suck-casting and its phase component has been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). It is shown that this alloy consists of primary crystalline Gd5Ge3 phase and amorphous matrix. The glass transition temperature (T-g) and crystallization temperatures (T-x) occur at 292 and 320 degrees C, respectively. The maximal magnetic entropy change (Delta S-M) under 0-5 T field is about 7.6 J (kg(-1) K-1) at 155 K and the refrigeration capacity (RC) is about 768 J kg(-1), which makes Gd60Co26Al6Ge8 bulk metallic glass matrix composite a promising candidate for magnetic refrigerant. (C) 2008 Published by Elsevier B.V.

引用

页码：578 / 580

页数：3

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