Recording Capability and Thermal Stability for Particulate Media with Inter-Particle Interaction
Summary :
Particulate media composed of very small particles were studied to determine high-density recording performance and thermal stability. Studied media included metal particulate media with mean particle length of 71, 102 and 148 nm, and Ba ferrite particulate media with mean diameter of 22, 28 and 50 nm. Using a loss-term simulation program, taking into account gap-loss, spacing-loss and particle length loss, the recording capability (D20 of 265 kFRPI for MP and 290 kFRPI for Ba ferrite media) was estimated. Thermal stability was evaluated from magnetization time decay measurements. It was found that MP media with large Ku values and 71 nm particles were satisfactorily stable, and the particle volume is still large enough in respect of thermal stability. However, 22-nm Ba ferrite media were less stable, primarily because of small Ku values and particle volume. It was also clarified that positive inter-particle interaction accelerates magnetization time decay, in the presence of a large reverse field.
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- IEICE TRANSACTIONS on Electronics Vol.E84-C No.9 pp.1147-1153
- Publication Date
- 2001/09/01
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- Special Section PAPER (Special Issue on Selected Papers from the 5th Asian Symposium on Information Storage Technology)
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Toshiyuki SUZUKI, Terumitsu TANAKA, "Recording Capability and Thermal Stability for Particulate Media with Inter-Particle Interaction" in IEICE TRANSACTIONS on Electronics,
vol. E84-C, no. 9, pp. 1147-1153, September 2001, doi: .
Abstract: Particulate media composed of very small particles were studied to determine high-density recording performance and thermal stability. Studied media included metal particulate media with mean particle length of 71, 102 and 148 nm, and Ba ferrite particulate media with mean diameter of 22, 28 and 50 nm. Using a loss-term simulation program, taking into account gap-loss, spacing-loss and particle length loss, the recording capability (D20 of 265 kFRPI for MP and 290 kFRPI for Ba ferrite media) was estimated. Thermal stability was evaluated from magnetization time decay measurements. It was found that MP media with large Ku values and 71 nm particles were satisfactorily stable, and the particle volume is still large enough in respect of thermal stability. However, 22-nm Ba ferrite media were less stable, primarily because of small Ku values and particle volume. It was also clarified that positive inter-particle interaction accelerates magnetization time decay, in the presence of a large reverse field.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e84-c_9_1147/_p
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@ARTICLE{e84-c_9_1147,
author={Toshiyuki SUZUKI, Terumitsu TANAKA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Recording Capability and Thermal Stability for Particulate Media with Inter-Particle Interaction},
year={2001},
volume={E84-C},
number={9},
pages={1147-1153},
abstract={Particulate media composed of very small particles were studied to determine high-density recording performance and thermal stability. Studied media included metal particulate media with mean particle length of 71, 102 and 148 nm, and Ba ferrite particulate media with mean diameter of 22, 28 and 50 nm. Using a loss-term simulation program, taking into account gap-loss, spacing-loss and particle length loss, the recording capability (D20 of 265 kFRPI for MP and 290 kFRPI for Ba ferrite media) was estimated. Thermal stability was evaluated from magnetization time decay measurements. It was found that MP media with large Ku values and 71 nm particles were satisfactorily stable, and the particle volume is still large enough in respect of thermal stability. However, 22-nm Ba ferrite media were less stable, primarily because of small Ku values and particle volume. It was also clarified that positive inter-particle interaction accelerates magnetization time decay, in the presence of a large reverse field.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - Recording Capability and Thermal Stability for Particulate Media with Inter-Particle Interaction
T2 - IEICE TRANSACTIONS on Electronics
SP - 1147
EP - 1153
AU - Toshiyuki SUZUKI
AU - Terumitsu TANAKA
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E84-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2001
AB - Particulate media composed of very small particles were studied to determine high-density recording performance and thermal stability. Studied media included metal particulate media with mean particle length of 71, 102 and 148 nm, and Ba ferrite particulate media with mean diameter of 22, 28 and 50 nm. Using a loss-term simulation program, taking into account gap-loss, spacing-loss and particle length loss, the recording capability (D20 of 265 kFRPI for MP and 290 kFRPI for Ba ferrite media) was estimated. Thermal stability was evaluated from magnetization time decay measurements. It was found that MP media with large Ku values and 71 nm particles were satisfactorily stable, and the particle volume is still large enough in respect of thermal stability. However, 22-nm Ba ferrite media were less stable, primarily because of small Ku values and particle volume. It was also clarified that positive inter-particle interaction accelerates magnetization time decay, in the presence of a large reverse field.
ER -
English
