SPATIAL NOISE PHENOMENA OF LONGITUDINAL MAGNETIC RECORDING MEDIA

被引：21

作者：

HOINVILLE, JR

INDECK, RS

MULLER, MW

机构：

[1] Department of Electrical Engineering, Washington University, St. Louis

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/20.179817

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have studied the spatial noise characteristics of uniformly magnetized media and implemented a synchronous magnetic pulse detection technique to measure waveforms from precise radial and azimuthal locations on a magnetically recorded disk. We introduce a correlation analysis which includes measuring noise waveforms from the same position on the disk under different remanent magnetic states. Results from this analysis demonstrate that at remanence only minor changes occur in the output waveform and its (presumed) corresponding magnetic structure from write to write, while at dc demagnetization large variations are seen for successive writes. We apply this sensitive correlation technique to analyze the random and deterministic components of media and head noise

引用

页码：3398 / 3406

页数：9

共 24 条

[1] MEASUREMENT OF INPLANE MAGNETIZATION BY FORCE MICROSCOPY [J].