磁気記録媒体の微細構造・特性制御のための下地層

概要

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Seed layers with low surface energy, which lead to increased density of nucleation sites in the initial growth region of the upper-layer deposited on them, were effective in attaining fine grains in a magnetic upper-layer. The reduction of grain size in a Co-Cr-Ta-Pt recording layer on an Ni-Fe-O intermediate-layer with low surface energy led to decreased noise level in the high-recording-density region. Grain size of an Fe-Co-B soft magnetic layer deposited on [Ni-Fe/Si] double seed layer with low adhesive force also reduced the grain size to about 82% of that of the Fe-Co-B single layer. Coercivity of an Fe-Co-B layer on an [Ni-Fe/Si] double seed layer decreased with improvement of the microstructure in an Fe-Co-B layer deposited on a seed layer with low adhesive force. The in-plane anisotropy field of the Fe-Co-B layer on an [Ni-Fe/Si] double seed layer increased to 380 Oe.
社団法人日本磁気学会の論文
2003-12-01