Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording
Lubricant reflow for 10 Å Z-Tetraol film is characterized for heat-assisted magnetic recording by numerical simulation using the experimentally determined thickness-dependent diffusion equation. The competition between laser-induced lubricant depletion (troughs) and subsequent healing by r...
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Japanese Society of Tribologists
2016
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oai:doaj.org-article:89ae944039f94866b958128b72761f1a2021-11-05T09:21:20ZDuty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording1881-219810.2474/trol.11.503https://doaj.org/article/89ae944039f94866b958128b72761f1a2016-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/11/4/11_503/_pdf/-char/enhttps://doaj.org/toc/1881-2198Lubricant reflow for 10 Å Z-Tetraol film is characterized for heat-assisted magnetic recording by numerical simulation using the experimentally determined thickness-dependent diffusion equation. The competition between laser-induced lubricant depletion (troughs) and subsequent healing by reflow is investigated as a function of lubricant depletion rate, trough width, trough depth, and duty cycle (reflow time between successive laser exposures). The simulations include 1, 5, 9 and 13 adjacent troughs. Trough width of 50 nm with an edge-to-edge separation distance of 50 nm and laser depletion rates of 1.0, 0.1 and 0.001 Å/cycle are simulated. Reflow kinetics on 13 troughs with a trough width of 20 nm and an edge-to-edge separation distance of 20 nm is also included to probe the effects in the limit of very small laser spots. Duty cycles of 10 and 100 millisec are used in the simulations. The results of the numerical simulations indicate that trough recovery by reflow increases with increasing duty cycle or decreasing number of adjacent troughs, trough separation distance and laser depletion rate. Conclusions based upon single trough studies are misleading for HAMR interfaces.Robert J. WaltmanJapanese Society of Tribologistsarticlez-tetraolhard disk drivesheat-assisted magnetic recordingreflowdiffusionPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 11, Iss 4, Pp 503-511 (2016) |
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z-tetraol hard disk drives heat-assisted magnetic recording reflow diffusion Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
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z-tetraol hard disk drives heat-assisted magnetic recording reflow diffusion Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Robert J. Waltman Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
description |
Lubricant reflow for 10 Å Z-Tetraol film is characterized for heat-assisted magnetic recording by numerical simulation using the experimentally determined thickness-dependent diffusion equation. The competition between laser-induced lubricant depletion (troughs) and subsequent healing by reflow is investigated as a function of lubricant depletion rate, trough width, trough depth, and duty cycle (reflow time between successive laser exposures). The simulations include 1, 5, 9 and 13 adjacent troughs. Trough width of 50 nm with an edge-to-edge separation distance of 50 nm and laser depletion rates of 1.0, 0.1 and 0.001 Å/cycle are simulated. Reflow kinetics on 13 troughs with a trough width of 20 nm and an edge-to-edge separation distance of 20 nm is also included to probe the effects in the limit of very small laser spots. Duty cycles of 10 and 100 millisec are used in the simulations. The results of the numerical simulations indicate that trough recovery by reflow increases with increasing duty cycle or decreasing number of adjacent troughs, trough separation distance and laser depletion rate. Conclusions based upon single trough studies are misleading for HAMR interfaces. |
format |
article |
author |
Robert J. Waltman |
author_facet |
Robert J. Waltman |
author_sort |
Robert J. Waltman |
title |
Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
title_short |
Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
title_full |
Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
title_fullStr |
Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
title_full_unstemmed |
Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording |
title_sort |
duty cycle effects in z-tetraol reflow in heat-assisted magnetic recording |
publisher |
Japanese Society of Tribologists |
publishDate |
2016 |
url |
https://doaj.org/article/89ae944039f94866b958128b72761f1a |
work_keys_str_mv |
AT robertjwaltman dutycycleeffectsinztetraolreflowinheatassistedmagneticrecording |
_version_ |
1718444422390087680 |