Control of Curie Temperature of FePt(Cu) Films Prepared From Pt(Cu)/Fe Bilayers

被引：11
作者：
Ikemoto, Jun-Ichi [1 ]
Imai, Yasuharu [1 ]
Nakagawa, Shigeki [1 ]
机构：
[1] Tokyo Inst Technol, Dept Phys Elect, Tokyo 1528552, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期
关键词：
Curie temperature; FePt; FePt(Cu); heat-assisted magnetic recording;
D O I：
10.1109/TMAG.2008.2001610
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：
Addition of Cu into L1(0) -ordered FePt alloy thin films with (001) preferential orientation results in the change of Curie temperature. Due to these aspects, the films have potential for next-generation high density perpendicular magnetic recording media, especially, heat-assisted magnetic recording (HAMR) media. FePt(Cu) films were fabricated by annealing Pt(Cu)/Fe bilayers prepared by facing targets sputtering. Their magnetic properties were investigated from room temperature to 300 degrees C. As a result, it is possible to control Curie temperature from 150 degrees C to 250 degrees C by changing the amount of Cu in FePt(Cu) films. In addition, we discuss required characteristics of medium for HAMR and mention that the Fer(55.3) Pt-37.5 (Cu)(7.2) film exhibited favorable characteristics for the HAMR medium.
引用
收藏
页码：3543 / 3546
页数：4
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