Large linear and volume magnetostriction in Fe-Ga alloys

被引：2
|
作者：
Chengbao Jiang [1 ]
Jinghua Liu [1 ]
Fang Gao [1 ]
Huibin Xu [1 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3 | 2007年 / 561-565卷
关键词：
Fe-Ga alloys; linear magnetostriction; volume magnetostriction; phase structure;
D O I：
10.4028/www.scientific.net/MSF.561-565.1117
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The growth velocity has a significant effect on the preferred orientation of the directionally solidified Fe81Ga19 magnetostrictive alloy. Strong (100) preferred orientation was obtained for a velocity range from l0mm/h to 20mm/h. An excellent magneto stricti on lambda(100) of 294 x 10(-6) was achieved for the (100) oriented crystal at a pre-stress of 74.1MPa. Linear and volume magnetostrictions were investigated in the as-east Fe81Ga19 alloys with A2 phase by measuring the change in length along the three-dimensional directions of the samples. Due to the contribution of the volume magnetostriction, the longitudinal magnetostriction increased from 27 ppm at 0.3 T to 47 ppm at 2.0 T. The volume magnetostriction can be drastically enhanced by doping Ga in Fe.
引用
收藏
页码：1117 / 1122
页数：6
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