斜め配向薄膜テープの遷移性ノイズと高密度記録再生特性

概要

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The noise characteristics of obliquely oriented Co-O thin-film tapes are investigated in relation to the magnetic properties of the tapes. The contribution of the transition noise, which is caused by the irregularity of the magnetic transition region, increases with the squareness ratio of the tape, owing to the large magnetization components in the longitudinal direction. With more porpendicularly oriented tapes, the transition noise is almost negligible, while larger film thickness is necessary to compensate for the output reduction at very low linear densities, resulting in increased non-transition noise. In largersqrareness tapes, the transition noise reduces the C/N ratio in the wave length region of around 1μm, although in the shorter-wavelength region, the tapes exhibit a higher C/N ratio than more perpendicularly oriented tapes, owing to the higher output.
社団法人日本磁気学会の論文
1998-04-15