Magnetic properties and static-dynamic magnetostrictive characteristics for SmFe2/Fe exchange-coupled multilayers

被引：2
|
作者：
Zhou Bai-yang [1 ]
Lei De-hui [1 ]
Chen Si-he [1 ]
Luo Han-bin [1 ]
机构：
[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2011年 / 323卷 / 17期
关键词：
SmFe2/Fe; Multilayer; IBSD; Magnetic property; Static-dynamic magnetostrictive characteristic;
D O I：
10.1016/j.jmmm.2011.04.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Giant magnetostrictive SmFe2/Fe exchange-coupled multilayers were fabricated by ion beam sputtering deposition on glass substrates. The effects of SmFe2/Fe exchange coupling action and vacuum annealing on soft-magnetic property and static-dynamic magnetostrictive characteristics of SmFe2/Fe multilayers were investigated. The results showed that the soft-magnetic, static-dynamic magnetostrictive characteristics were greatly improved by SmFe2/Fe exchange coupling action and proper vacuum annealing treatment temperature. Compared with that of SmFe2 single film, the coercivity in the direction of easy magnetization axis for SmFe2/Fe exchange-coupled multilayers exhibited a greater decrease. Better soft-magnetic properties were achieved (H-c=2.54 kA/m, M-s=120.38 emu/g, and M-r/M-s=0.21) after vacuum annealing at certain temperature. The magnetostrictive coefficient for SmFe2/Fe exchange-coupled multilayers was about 135 ppm at 16 kA/m magnetic field. At first order resonant frequency (99.2 Hz), the amplitude peak-peak value for the as-deposited SmFe2/Fe exchange-coupled multilayers was 46 mu m. After the vacuum annealing treatment at 250 degrees C, the amplitude peak-peak value increased to 650 mu m. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2243 / 2247
页数：5
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