Impact of Media Design on Track Edge in Perpendicular Magnetic Recording

被引：10

作者：

Feng, Yong-Chang ^{[1
]}

Hurben, Michael J. ^{[1
]}

Yeh, Nan-Hsiung ^{[1
]}

Tseng, Chun-Yang ^{[1
]}

Zheng, Anna ^{[1
]}

Misra, Arkajyoti ^{[1
]}

Liu, Connie ^{[1
]}

Zhu, Xiaobin ^{[1
]}

Jury, Jason C. ^{[1
]}

Steiner, Philip ^{[1
]}

Zhang, Zhenyong ^{[1
]}

Hannay, Jonathan ^{[1
]}

Xue, Jianhua ^{[1
]}

Tang, Li ^{[1
]}

机构：

[1] Seagate Technol Inc, Fremont, CA 94538 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 02期

关键词：

Encroachment; erase; exchange; side-reading; track edge; underlayer; SPIN-STAND;

D O I：

10.1109/TMAG.2008.2010673

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：

As track density increases, it has become even more critical to understand the track edge. In this study, the impact of media design on the track edges in perpendicular magnetic recording has been investigated. This study shows that soft under layer thickness and intergranular exchange coupling have significant impact on both track edge erasure and write width. In the range we studied, head-to-keeper spacing and media coercivity have a strong impact on write width, but not on track edge erasure. On the other hand, media design does not impact transition curvature significantly. Experimental observations were supported by media micromagnetic modeling results and write field simulation using a finite element model. Analyzing the write bubble helps to understand the dependence of adjacent track encroachment on media design. Cross track profiles of various signal-to-noise ratio (SNR) components can provide valuable insights into different track edge mechanisms.

引用

页码：905 / 910

页数：6

共 14 条

[1] Analysis of written transition curvature in perpendicular magnetic recording from spin-stand testing [J].