MAGNETIC CHARACTERIZATION OF THIN-FILM RECORDING MEDIA

被引:49
作者
OGRADY, K
CHANTRELL, RW
SANDERS, IL
机构
[1] UNIV KEELE,DEPT PHYS,KEELE ST5 5BG,STAFFS,ENGLAND
[2] IBM CORP,DIV STORAGE SYST PROD,SAN JOSE,CA 95193
关键词
D O I
10.1109/20.195584
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
In this paper the basic magnetic characterisation techniques for thin film recording media are critically examined in relation to the requirements for modern high storage density materials. The applicability and usefulness of remanence curves for the characterisation of thin film media is discussed together with the recently developed DELTAI (H) technique. The origins of the relation between these measurements and cooperative reversal are presented together with improved data showing the correlation between DELTAI (H) and noise. This discussion is extended to include the time dependent phenomena and in particular the activation volume, including the effects of intergranular coupling. Data is presented to show these effects in both single layer alloy films and laminated systems and the implications for ultimate recording density discussed.
引用
收藏
页码:286 / 291
页数:6
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