For the purpose of reducing grain size and grain size distribution while maintaining intergranular interactions of magnetic grains in CoCrTaNiPt/Cr media, a small amount of oxygen exposure onto a normal NiP and a Co co-precipitated NiP (Co-NiP)/Al-alloy substrates was used. Oxygen exposure was used for the purpose of increasing the density of nucleation sites. The dependence of media microstructure and R/W performance on oxygen exposure and Co concentration was examined. It was found that utilization of exposure of a small amount of oxygen gas onto a normal NiP and Co-NiP/Al-alloy substrates effectively reduced the grain size and its distribution. As a result, media noise was effectively reduced by about 10% and signal to noise ratio was improved by 1 dB.
|ジャーナル||Digests of the Intermag Conference|
|出版ステータス||Published - 2000 1 1|
|イベント||2000 IEEE International Magnetics Conference-2000 IEEE INTERMAG - Toronto, Ont, Can|
継続期間: 2000 4 9 → 2000 4 13
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