TY - JOUR
T1 - Micromagnetic model analysis of planar-type write head field response and dependence on pole tip, return yoke, and shield structure
AU - Kanai, Yasushi
AU - Tamura, Hidekazu
AU - Yamakawa, Kiyoshi
AU - Yoshida, Kazuetsu
AU - Greaves, Simon J.
AU - Muraoka, Hiroaki
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - High-frequency response
KW - micromagnetic simulations
KW - perpendicular magnetic recording
KW - write heads
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U2 - 10.1109/TMAG.2013.2251893
DO - 10.1109/TMAG.2013.2251893
M3 - Article
AN - SCOPUS:84883247009
VL - 49
SP - 4970
EP - 4976
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 9
M1 - 6476734
ER -