Micromagnetic Analysis of Switching Characteristics for Main Pole in Single-Pole-Type Head
Summary :
A 3D micromagnetic model is established to analyze the dynamics of single-pole-type (SPT) heads, in which a main pole and a soft underlayer (SUL) are included. It is found that, in an SPT head whose write pole thickness Lm and pole width W are 40 nm each, the throat height should be no greater than the pole tip width to avoid high remnant field at the static state. The influences of the head's parameters and the damping constant on switching time of SPT head are analyzed respectively. The crystalline anisotropy field of SUL is also proved to have great effect on the switching characteristics: a high anisotropy field along the cross-track direction could stabilize the magnetic moments in SUL and greatly shorten the switching time.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E90-C No.8 pp.1549-1554
- Publication Date
- 2007/08/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1093/ietele/e90-c.8.1549
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress of High-Density Information Storage)
- Category
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Dan WEI, Liang QUAN, "Micromagnetic Analysis of Switching Characteristics for Main Pole in Single-Pole-Type Head" in IEICE TRANSACTIONS on Electronics,
vol. E90-C, no. 8, pp. 1549-1554, August 2007, doi: 10.1093/ietele/e90-c.8.1549.
Abstract: A 3D micromagnetic model is established to analyze the dynamics of single-pole-type (SPT) heads, in which a main pole and a soft underlayer (SUL) are included. It is found that, in an SPT head whose write pole thickness Lm and pole width W are 40 nm each, the throat height should be no greater than the pole tip width to avoid high remnant field at the static state. The influences of the head's parameters and the damping constant on switching time of SPT head are analyzed respectively. The crystalline anisotropy field of SUL is also proved to have great effect on the switching characteristics: a high anisotropy field along the cross-track direction could stabilize the magnetic moments in SUL and greatly shorten the switching time.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e90-c.8.1549/_p
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@ARTICLE{e90-c_8_1549,
author={Dan WEI, Liang QUAN, },
journal={IEICE TRANSACTIONS on Electronics},
title={Micromagnetic Analysis of Switching Characteristics for Main Pole in Single-Pole-Type Head},
year={2007},
volume={E90-C},
number={8},
pages={1549-1554},
abstract={A 3D micromagnetic model is established to analyze the dynamics of single-pole-type (SPT) heads, in which a main pole and a soft underlayer (SUL) are included. It is found that, in an SPT head whose write pole thickness Lm and pole width W are 40 nm each, the throat height should be no greater than the pole tip width to avoid high remnant field at the static state. The influences of the head's parameters and the damping constant on switching time of SPT head are analyzed respectively. The crystalline anisotropy field of SUL is also proved to have great effect on the switching characteristics: a high anisotropy field along the cross-track direction could stabilize the magnetic moments in SUL and greatly shorten the switching time.},
keywords={},
doi={10.1093/ietele/e90-c.8.1549},
ISSN={1745-1353},
month={August},}
Copy
TY - JOUR
TI - Micromagnetic Analysis of Switching Characteristics for Main Pole in Single-Pole-Type Head
T2 - IEICE TRANSACTIONS on Electronics
SP - 1549
EP - 1554
AU - Dan WEI
AU - Liang QUAN
PY - 2007
DO - 10.1093/ietele/e90-c.8.1549
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E90-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 2007
AB - A 3D micromagnetic model is established to analyze the dynamics of single-pole-type (SPT) heads, in which a main pole and a soft underlayer (SUL) are included. It is found that, in an SPT head whose write pole thickness Lm and pole width W are 40 nm each, the throat height should be no greater than the pole tip width to avoid high remnant field at the static state. The influences of the head's parameters and the damping constant on switching time of SPT head are analyzed respectively. The crystalline anisotropy field of SUL is also proved to have great effect on the switching characteristics: a high anisotropy field along the cross-track direction could stabilize the magnetic moments in SUL and greatly shorten the switching time.
ER -
English
