化学CoNiP垂直磁记录介质磁性能与相分离显微结构的关系

T. Homma , T. Osaka , Y. Yamazaki , T. Namikawa
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引用次数: 10

摘要

研究了垂直磁记录介质化学沉积的CoNiP薄膜的磁性与结构性能的相关性,重点研究了其纳米尺度的相分离结构。对具有不同垂直矫顽力的介质Hc(⊥)进行了检查,并澄清了更高的Hc(⊥)介质显示出更清晰的相分离条件,这一点得到了选择性化学蚀刻技术的证实。研究结果强烈表明,这种结构在获得高Hc(⊥)和在具有富镍平均成分的膜中形成hcp结构方面起着重要作用。
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Correlation between magnetic properties and phase-separated microstructure of electroless CoNiP perpendicular magnetic recording media

Correlation between magnetic and structural properties of electroless-deposited CoNiP films for the use of perpendicular magnetic recording media was studied, focusing upon their phase-separated structure in nanometer scale. The media with various perpendicular coercivity, Hc(⊥), were examined and it was clarified that higher Hc(⊥) medium showed a clearer phase-separated condition, which was confirmed by the selective chemical-etching technique. It was strongly indicated that such a structure plays an important role in attaining a high Hc(⊥) and in forming an hcp structure in a film with a Ni-rich average composition.

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