TY - JOUR
T1 - High-field gradient single-pole head with an improved pole structure
AU - Xia, Weixing
AU - Muraoka, Hiroaki
AU - Nakamura, Yoshihisa
N1 - Funding Information:
Manuscript received February 14, 2002; revised May 28, 2002. This work was supported in part by the JSPS program “Research for the Future” and by the Storage Research Consortium. The authors are with the Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan (e-mail: xiawxing@kiroku.riec.tohoku.ac.jp). Digital Object Identifier 10.1109/TMAG.2002.802661.
PY - 2002/9
Y1 - 2002/9
N2 - Relationship between head field and pole structure in single-pole head is investigated by finite-element method calculation. The calculation reveals that regular single-pole head does show relatively large field gradient with maximum of 150 Oe/nm, which is crucial for high-resolution recording, but only for relatively large field strength. By placing an additive pole in the vicinity of main pole, the head-field gradient is improved. The new pole structure increases the gradient up to 250 Oe/nm. The large field gradient is obtained in wider range of field strength than the regular single-pole head. The calculation also shows simulated recorded transition with the large head field gradient becomes narrow.
AB - Relationship between head field and pole structure in single-pole head is investigated by finite-element method calculation. The calculation reveals that regular single-pole head does show relatively large field gradient with maximum of 150 Oe/nm, which is crucial for high-resolution recording, but only for relatively large field strength. By placing an additive pole in the vicinity of main pole, the head-field gradient is improved. The new pole structure increases the gradient up to 250 Oe/nm. The large field gradient is obtained in wider range of field strength than the regular single-pole head. The calculation also shows simulated recorded transition with the large head field gradient becomes narrow.
KW - Head-field gradient
KW - Perpendicular magnetic recording
KW - Single-pole head
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U2 - 10.1109/TMAG.2002.802661
DO - 10.1109/TMAG.2002.802661
M3 - Conference article
AN - SCOPUS:0036761752
SN - 0018-9464
VL - 38
SP - 2216
EP - 2218
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 5 I
T2 - 2002 International Magnetics Conference (Intermag 2002)
Y2 - 28 April 2002 through 2 May 2002
ER -