Perpendicular recording CoPtCrO composite media with performance enhancement capping layer
复合材料
复合数
作者
G. Choe,M. Zheng,B.R. Acharya,E.N. Abarra,J.N. Zhou
出处
期刊:IEEE Transactions on Magnetics [Institute of Electrical and Electronics Engineers] 日期:2005-04-04卷期号:41 (10): 3172-3174被引量:43
标识
DOI:10.1109/tmag.2005.855283
摘要
A systematic investigation of the structural and recording characteristics of CoPtCrO composite media with various Co alloys as well as continuous TbFeCo capping layers has been performed. For the media with a Co-alloy capping layer (M/sub s//spl sim/900 emu/cm/sup 3/), the transition jitter remains unaffected and dc noise is greatly reduced. However, for the media with low M/sub s/ capping layer or continuously exchange coupled TbFeCo capping layer, transition jitter is increased. Magnetically continuous but structurally discontinuous Co-alloy capping layers grown onto well-isolated Co grains can reduce dc noise, while maintaining low transition noise.