Perpendicular magnetic recording media based on Co-Pd multilayer with granular seed layer

被引：9
|
作者：
Matsunuma, S [1 ]
Yano, A [1 ]
Fujita, E [1 ]
Onuma, T [1 ]
Takayama, T [1 ]
Ota, N [1 ]
机构：
[1] Hitachi Maxell Ltd, Dev & Technol, Ibaraki 3002496, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 04期
关键词：
Co-Pd multilayers; palladium silicon nitride; perpendicular magnetic recording; seed layer effect;
D O I：
10.1109/TMAG.2002.1017745
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：
We have investigated Co-Pd multilayer deposited on a Pd-SiN granular seed layer and a FeTaC soft magnetic underlayer (SUL) for perpendicular magnetic recording. The Pd-SiN granular seed layer of 3 nm was found to be very effective to get good magnetic properties with coercivity of 3.9 kOe, a negative nucleation field of -2.1 kOe, and a M-H loop slope parameter 4pi (dM/dH)(H=Hc) of 1.3. The average column diameter of 13.7 nm with a dispersion of 21.7% was evaluated from the transmission electron microscopy image of well-separated columns with a clear boundary. This Co-Pd medium gave better playback performances by a merged ring giant magnetoresistive head compared to the medium with a Pd seed layer. The effect of Ar plasma etching on the SUL was also investigated to improve playback performance.
引用
收藏
页码：1622 / 1626
页数：5
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