Slider-Disk Impact and Impact Induced Data Erasure in High Density Magnetic Recording Systems

Bo LIU; Yi-Jun MAN; Zhi-Min YUAN; Lei ZHU; Ji-Wen WANG

Slider-Disk Impact and Impact Induced Data Erasure in High Density Magnetic Recording Systems

Bo LIU, Yi-Jun MAN, Zhi-Min YUAN, Lei ZHU, Ji-Wen WANG

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Future high density magnetic recording requires a nanometer spaced head-slider interface, high track seeking velocity and high spindle speed. Such a combination greatly increases the likelihood of slider-disk and slider-particle-disk impact. Furthermore, the impact can generate high flash temperature and leads to data reliability problems, such as partial or full data erasure. This work report a method to conduct controlled experimental investigations into the possibility of such a data erasure even when the temperature is far below the Curie temperature. Results indicate that the high density magnetic transitions are of high likelihood of being affected by the flash temperature. Investigations also extended to micromagnetic modeling of the flash temperature effect. Results suggest that thermally induced local stress can play important roll in the data erasure process. Modeling results also exhibit that smaller grain size and higher recording density are also of higher likelihood of getting the transitions being affected by the flash temperature.

Publication: IEICE TRANSACTIONS on Electronics Vol.E83-C No.9 pp.1539-1545

Publication Date: 2000/09/25

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Type of Manuscript: Special Section PAPER (Special Issue on Selected Papers from the 4th Asian Symposium for Information Storage Technology)

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Bo LIU, Yi-Jun MAN, Zhi-Min YUAN, Lei ZHU, Ji-Wen WANG, "Slider-Disk Impact and Impact Induced Data Erasure in High Density Magnetic Recording Systems" in IEICE TRANSACTIONS on Electronics, vol. E83-C, no. 9, pp. 1539-1545, September 2000, doi: .
Abstract: Future high density magnetic recording requires a nanometer spaced head-slider interface, high track seeking velocity and high spindle speed. Such a combination greatly increases the likelihood of slider-disk and slider-particle-disk impact. Furthermore, the impact can generate high flash temperature and leads to data reliability problems, such as partial or full data erasure. This work report a method to conduct controlled experimental investigations into the possibility of such a data erasure even when the temperature is far below the Curie temperature. Results indicate that the high density magnetic transitions are of high likelihood of being affected by the flash temperature. Investigations also extended to micromagnetic modeling of the flash temperature effect. Results suggest that thermally induced local stress can play important roll in the data erasure process. Modeling results also exhibit that smaller grain size and higher recording density are also of higher likelihood of getting the transitions being affected by the flash temperature.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_9_1539/_p

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@ARTICLE{e83-c_9_1539,
author={Bo LIU, Yi-Jun MAN, Zhi-Min YUAN, Lei ZHU, Ji-Wen WANG, },
journal={IEICE TRANSACTIONS on Electronics},
title={Slider-Disk Impact and Impact Induced Data Erasure in High Density Magnetic Recording Systems},
year={2000},
volume={E83-C},
number={9},
pages={1539-1545},
abstract={Future high density magnetic recording requires a nanometer spaced head-slider interface, high track seeking velocity and high spindle speed. Such a combination greatly increases the likelihood of slider-disk and slider-particle-disk impact. Furthermore, the impact can generate high flash temperature and leads to data reliability problems, such as partial or full data erasure. This work report a method to conduct controlled experimental investigations into the possibility of such a data erasure even when the temperature is far below the Curie temperature. Results indicate that the high density magnetic transitions are of high likelihood of being affected by the flash temperature. Investigations also extended to micromagnetic modeling of the flash temperature effect. Results suggest that thermally induced local stress can play important roll in the data erasure process. Modeling results also exhibit that smaller grain size and higher recording density are also of higher likelihood of getting the transitions being affected by the flash temperature.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Slider-Disk Impact and Impact Induced Data Erasure in High Density Magnetic Recording Systems
T2 - IEICE TRANSACTIONS on Electronics
SP - 1539
EP - 1545
AU - Bo LIU
AU - Yi-Jun MAN
AU - Zhi-Min YUAN
AU - Lei ZHU
AU - Ji-Wen WANG
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2000
AB - Future high density magnetic recording requires a nanometer spaced head-slider interface, high track seeking velocity and high spindle speed. Such a combination greatly increases the likelihood of slider-disk and slider-particle-disk impact. Furthermore, the impact can generate high flash temperature and leads to data reliability problems, such as partial or full data erasure. This work report a method to conduct controlled experimental investigations into the possibility of such a data erasure even when the temperature is far below the Curie temperature. Results indicate that the high density magnetic transitions are of high likelihood of being affected by the flash temperature. Investigations also extended to micromagnetic modeling of the flash temperature effect. Results suggest that thermally induced local stress can play important roll in the data erasure process. Modeling results also exhibit that smaller grain size and higher recording density are also of higher likelihood of getting the transitions being affected by the flash temperature.
ER -