CO-BASED SUPERSTRUCTURED NITRIDE ALLOY-FILMS - CHARACTERISTICS AND APPLICATIONS FOR HIGH-FREQUENCY HEADS

被引:5
作者
KAMINAKA, N
SAKAKIMA, H
TAKAHASHI, K
OSANO, K
HASEGAWA, H
机构
[1] Magnetic Recording Research Lab., Matsushita Electric Ind. Co., Ltd., Moriguchi, Osaka 570, 3–15, Yagumo-Nakamachi
关键词
8;
D O I
10.1109/20.102869
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
Co-based superstructured films composed of 25nm thick non-nitride and nitride layers were prepared by N2 reactive RF sputtering. The films have high 4πMs=13kG, high permeability μ=3000 and high thermal stability of the magnetic properties. Magnetic heads comprising laminated superstructured films insulated with SiO2 films were developed for high frequency operations. The heads showed excellent recording capability for narrow gap recording with metal tapes and high reproducing characteristics at high frequencies over 10MHz and achieved an increase of more than 4dB in normalized output compared with conventional laminated type amorphous film heads. The superstructured nitride film heads are expected to be used in the next generation VCRs operated in higher density recording and wider frequency bands. © 1990 IEEE
引用
收藏
页码:2936 / 2941
页数:6
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