New recording method combining thermo-magnetic writing and flux detection

被引：105

作者：

Saga, H ^{[1
]}

Nemoto, H ^{[1
]}

Sukeda, H ^{[1
]}

Takahashi, M ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Kokubunji, Tokyo 1858601, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 3B期

关键词：

thermo-magnetic writing; flux detection; perpendicular magnetic recording; magneto-optical (MO) recording; giant magneto-resistive (GMR) sensor;

D O I：

10.1143/JJAP.38.1839

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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/inch(2). 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 superparamagnetic limitation in longitudinal magnetic recording.

引用

页码：1839 / 1840

页数：2

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