Magnetic Properties of Co/Pd Multilayers Sputter-Deposited at High Ar Gas Pressures (<Special issue>Perpendicular Recording)

概要

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Sputter-deposition at high Ar pressures was investigated with the aim of reducing the medium noise of Co/Pd multilayer films for perpendicular magnetic recording media. A large increase in perpendicular coercivity was obtained in samples prepared at Ar pressures above 10 Pa. Angular variations of the coercivity suggested that the magnetization reversal process was dominated by domain wall motion in the samples prepared at Ar pressures below 5Pa, while it seemed rotational in samples prepared at Ar pressures above 10 Pa. Through recording performance tests with a ring head, it was found that a sample prepared at a high Ar pressure of 70 Pa showed a lower medium noise level and higher recording resolution than a sample prepared at 1 Pa.
社団法人日本磁気学会の論文
1997-04-15