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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Autor principal:	Robert J. Waltman
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2016
Materias:	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
Acceso en línea:	https://doaj.org/article/89ae944039f94866b958128b72761f1a
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spelling	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)
institution	DOAJ
collection	DOAJ
language	EN
topic	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
spellingShingle	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

Duty Cycle Effects in Z-Tetraol Reflow in Heat-Assisted Magnetic Recording

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