Publication
IEEE Transactions on Magnetics
Paper

Signal to Noise Ratio of Thin Film Disks with Various Orientation Ratios

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Abstract

Thin film disks with various orientation ratios (OR) ranging from 0.5 to 4.3 were fabricated by sputter deposition of CoPtCr with Cr underlayers onto preheated NiP/AI-Mg disks. The recording characteristics of these disks were investigated using a thin film head. The isolated pulse signal amplitude to media noise ratio (So/N) increased when OR was increased from 0.5 to 1 and then remained relatively constant for OR ≥ 1. An improvement of about 10 dB in overwrite of the disks with OR > 1 was observed. © 1990 IEEE

Date

01 Jan 1990

Publication

IEEE Transactions on Magnetics

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