Magnetic properties and microstructure of the granular films processed by annealing FePt-based multilayers

被引：5
作者：
Seki, TO [1 ]
Takahashi, YK
Hono, K
机构：
[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan
[2] Univ Tsukuba, Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2005年 / 41卷 / 10期
关键词：
coercivity; energy product; exchange coupling; multilayer; nanocomposite magnets;
D O I：
10.1109/TMAG.2005.854693
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To explore the possibility of FePt-based soft/hard nanocomposite magnets, granular films were prepared by annealing Pt/Fe, FePt/Fe, and FePt/Fe-3 Pt multilayers. Although a high coercivity of 12 kOe was obtained by annealing the Fe3Pt/FePt multilayers, only a small remanence was obtained due to random orientation of L1(0) FePt grains. By introducing oxygen during the film deposition, a few nanometer oxide particles were observed within the FePt grains and H, increased at the expense of M-r. A possible way to achieve a higher value of (BH)(max) is discussed based on the relationship between the microstructure and magnetic properties.
引用
收藏
页码：3799 / 3801
页数：3
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