Micromagnetic Model Analysis of Planar-Type Write Head Field Response and Dependence on Pole Tip, Return Yoke, and Shield Structure

We used a micromagnetic model to investigate the high-frequency (1-5 GHz) response, peak recording field strength, recording field gradient, and adjacent track erasure (ATE) field for various main pole tip, shield, and return yoke structures in planar type heads. The effect of the pole tip area at t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2013-09, Vol.49 (9), p.4970-4976
Main Authors: Kanai, Yasushi, Tamura, Hidekazu, Yamakawa, Kiyoshi, Yoshida, Kazuetsu, Greaves, Simon J., Muraoka, Hiroaki
Format: Article
Language:English
Subjects:
Coils
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
High-frequency response
Magnetic heads
Magnetic noise
Magnetic shielding
Magnetization
Materials science
micromagnetic simulations
Micromagnetics
Other topics in materials science
perpendicular magnetic recording
Physics
write heads
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We used a micromagnetic model to investigate the high-frequency (1-5 GHz) response, peak recording field strength, recording field gradient, and adjacent track erasure (ATE) field for various main pole tip, shield, and return yoke structures in planar type heads. The effect of the pole tip area at the air-bearing surface (ABS) and the return yoke structure is also discussed. It was found that the pole tip and shield arrangement had a major effect on the peak recording field strength, recording field gradient, and ATE field, i.e., the trailing and side shields work to reduce the undesired field, however, they also slow the head field response due to the interaction between the main pole tip and the shield. The field responses are also dependent on the main pole tip-shield structures and pole tip structures. The return yoke thickness and area were important determinants of response speed and peak field.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2013.2251893