COPTCR COMPOSITE MAGNETIC THIN-FILMS

被引:19
作者
SHIMIZU, T
IKEDA, Y
TAKAYAMA, S
机构
[1] IBM Research, Tokyo Research Laboratory, IBM Japan Ltd., Chiyoda-ku, Tokyo, 102, Japan
关键词
D O I
10.1109/20.179726
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
CoPtCr composite thin films were produced by co-sputtering non-magnetic compounds such as SiO2, SiN, ZrO2, and SiC. These films were prepared without using any underlayer. It was found that the magnetic properties of CoPtCr alloys, such as the in-plane coercivity Hc and coercivity squareness S*, were significantly improved by admixing non-magnetic compounds. We obtained CoPtCr + SiO2 (10 vol%) composite films showing a high coercivity of more than 2 kOe for a thickness of 25 nm, without using an underlayer. Torque magnetometer and x-ray pole figure measurements revealed that when SiO2 is admixed, the c-axis of CoPtCr films tends to decline toward the in-plane direction, as a result of the increase of the in-plane anisotropy. From the experimental results of magnetic recording, it was found that the media noise of CoPtCr films was reduced by admixing SiO2.
引用
收藏
页码:3102 / 3104
页数:3
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