Jpn. J. Appl. Phys. 38 (1999) pp. 1839-1840 |Next Article| |Table of Contents|
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New Recording Method Combining Thermo-Magnetic Writing and Flux Detection
Central Research Laboratory, Hitachi, Ltd., 1-280
Higashi-Koigakubo, Kokubunji-shi, Tokyo 185-8601, Japan
(Received November 20, 1998; accepted for publication December 1, 1998)
We have developed a new perpendicular thermo-magnetic recording
method coupled with magnetic flux detection. The resolution is
substantially improved by flux detection. Compared to the latest
magneto-optical disk drives, the carrier-to-noise ratio of a
reproduced signal is 5 dB higher, and the recording density reaches
8.3 Gbit/inch2. Moreover, this recording method has a good affinity to
near-field optics, and it is an effective technique for attaining a
higher density beyond the super-paramagnetic limitation in
longitudinal magnetic recording.
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