Magnetic Cluster Size Distribution and Its Relation to Read/Write Performance From Spinstand Testing

被引：9

作者：

Hashimoto, Mitsuhiro ^{[1
]}

Nakagawa, Hiroyuki ^{[1
]}

Nakamoto, Kazuhiro ^{[1
]}

Ide, Hiroshi ^{[2
]}

Ichihara, Takayuki ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Odawara, Kanagawa 2568510, Japan

[2] Hitachi Global Storage Technol, Kanagawa 2528588, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 10期

关键词：

Alternating current (ac)-erased noise spectrum; autocorrelation function; magnetic cluster size distribution; spinstand testing; read/write (R/W) performance; PERPENDICULAR RECORDING MEDIA; THIN-FILM MEDIA; NOISE;

D O I：

10.1109/TMAG.2009.2022335

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 developed an analysis method that uses spinstand tester to estimate magnetic cluster size distributions, including average size and size deviations. To statistically analyze the alternating current (ac)-erased magnetization distribution, the autocorrelation functions of the magnetization distributions were derived from readback media noise spectra. The cluster size distributions were quantified from the autocorrelation function by utilizing the undershoot value as well as the zero-crossing shift length. Good agreement with minor-loop analysis supported the validity of this method. This method will be useful for developing media because measuring is easy, fast, and can be used for various kinds of recording media under a variety of conditions. The relationship between the transition jitter and the magnetic cluster size distributions were clarified by regression analysis. The results showed reducing the average cluster size should be the first priority, and lowering size deviation should be the second.

引用

页码：3718 / 3721

页数：4

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