SPECTRUM ANALYSIS OF RECORDED MAGNETIZATION USING MAGNETIC FORCE MICROSCOPY

被引：15
|
作者：
HONDA, Y
INABA, N
TOMIYAMA, F
YAMAMOTO, T
FUTAMOTO, M
机构：
[1] Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1995年 / 34卷 / 8A期
关键词：
MAGNETIC FORCE MICROSCOPE; SPECTRUM ANALYSIS; MAGNETIZATION STRUCTURE; LONGITUDINAL RECORDING MEDIUM; NOISE CHARACTERISTICS;
D O I：
10.1143/JJAP.34.L987
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spectrum analyses of recorded magnetization were performed using magnetic force microscopic (MFM) images to quantitatively analyze the relationship between the magnetization structure and the reproduced signal output. Repeated one-dimensional Fourier analyses were performed on an MFM image along the recording direction of the disk medium for a certain width with a pitch of about 70 nm. The dependence of MFM signal intensity on wavelength was obtained through Fourier transformation. Differences in the noise characteristics of CoCrTa media with different Cr compositions were investigated. Several peaks in the Fourier-transformed spectrum are related to the magnetic cluster size and/or the magnetic cross-linking distance between neighboring recorded bits. The magnetic interactions were found to extend up to about 0.5 mu m and 1 mu m for magnetically recorded CoCr16Ta4 and CoCr10Ta4 media, respectively.
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页码：L987 / L990
页数：4
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