Magnetic and magnetostrictive properties of amorphous TbFe/FeAl multilayer thin film

被引：3
|
作者：
Wang Wei [1 ]
Mi Yiming [1 ]
Qian Shiqiang [1 ]
Zhou Xiying [1 ]
机构：
[1] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai 201620, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2008年 / 26卷 / 04期
关键词：
exchange coupling; multilayer; TbFe/FeAl; magnetostrictive coefficient; rare earths;
D O I：
10.1016/S1002-0721(08)60139-8
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Exchange coupling multilayer thin films, which combined giant magnetostriction and soft magnetic properties, were of growing interest for applications. The TbFe/FeAl multilayer thin films were prepared by dc magnetron sputtering onto glass substrates. The microstructure, magnetic, and magnetostrictive properties of TbFe/FeAl multilayer thin film was investigated at different annealing temperatures. The results indicated that the soft magnetic and magnetostrictive properties for TbFe/FeAl multilayer thin film compared with TbFe single layer film were obviously improved. In comparison with the intrinsic coercivity H-J(c) of 59.2 kA/m for TbFe single layer film, the intrinsic coercivity H-J(c) for TbFe/FeAl multilayer thin films rapidly dropped to 29.6 kA/m. After optimal annealing (350 degrees Cx60 min), magnetic properties of H-s=96 kA/m and H-J(c)= 16 kA/m were obtained, and magnetostrictive coefficient could reach to 574x10(-6) under an external magnetic field of 400 kA center dot m(-1) for the TbFe/FeAl multilayer thin film.
引用
收藏
页码：571 / 574
页数：4
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