High temperature magnetic properties of mechanically alloyed Fe-Zr powder

被引：1

作者：

Mishra, Debabrata ^{[1
]}

Perumal, A. ^{[1
]}

Srinivasan, A. ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Phys, Gauhati 781039, India

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

amorphous phase; mechanical alloying; curie temperature; internal stress; magnetic moment;

D O I：

10.1016/j.matlet.2008.01.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the preparation and characterization of amorphous/non-equilibrium solid solution Fe100-xZrx (x=20-35) alloys by mechanical alloying process. The microstructure and magnetic properties of milled powders have been studied as a function of Zr substitution. The effective magnetic moment of as-milled powders decreases as concentration of Zr is increased. Thermomagnetization measurements confirmed that the Fe80Zr20 sample exhibits two clear magnetic phase transitions due to the co-existence of an amorphous phase and a Fe rich non-equilibrium solid solution. All the other samples exhibiting an amorphous structure showed a single magnetic phase transition with Curie temperature of similar to 570 degrees C, which did not vary much with different composition. The Curie temperature of the mechanically alloyed powders is noticeably higher than those of melt-spun amorphous ribbons. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2640 / 2642

页数：3

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