Lubricant Thermodiffusion in Heat Assisted Magnetic Recording

Molecular dynamics modeling of lubricant displacement on a disk during transient heating in a heat assisted recording interface is presented. It is found that in the time and dimension scales expected for high density recording (nanosecond, tens of nanometers), a significant lubricant removal from t...

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Veröffentlicht in:	IEEE transactions on magnetics 2012-11, Vol.48 (11), p.4471-4474
Hauptverfasser:	Marchon, B., Saito, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon Computational fluid dynamics Cross-disciplinary physics: materials science rheology Exact sciences and technology Head-disk interface Heat-assisted magnetic recording Heating lubricant Lubricants Magnetism Materials science Other topics in materials science Physics Surface tension thermocapillary effect thermodiffusion
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creator	Marchon, B. Saito, Y.
description	Molecular dynamics modeling of lubricant displacement on a disk during transient heating in a heat assisted recording interface is presented. It is found that in the time and dimension scales expected for high density recording (nanosecond, tens of nanometers), a significant lubricant removal from the heat spot center can occur, leading to the formation of a rim around it. Continuum fluid dynamics calculations were also performed using a temperature dependent Hamaker constant for lubricant-lubricant interactions. These results were in good agreement with the molecular dynamics predictions.
doi_str_mv	10.1109/TMAG.2012.2194138
format	Article
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It is found that in the time and dimension scales expected for high density recording (nanosecond, tens of nanometers), a significant lubricant removal from the heat spot center can occur, leading to the formation of a rim around it. Continuum fluid dynamics calculations were also performed using a temperature dependent Hamaker constant for lubricant-lubricant interactions. 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These results were in good agreement with the molecular dynamics predictions.</description><subject>Carbon</subject><subject>Computational fluid dynamics</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Head-disk interface</subject><subject>Heat-assisted magnetic recording</subject><subject>Heating</subject><subject>lubricant</subject><subject>Lubricants</subject><subject>Magnetism</subject><subject>Materials science</subject><subject>Other topics in materials science</subject><subject>Physics</subject><subject>Surface tension</subject><subject>thermocapillary effect</subject><subject>thermodiffusion</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kEFLAzEQhYMoWKs_QLwsiMetmSSbZA8eStFWaBGknkM6m9SUdrcm24P_3l1bepoZ5ntvhkfIPdARAC2fl4vxdMQosBGDUgDXF2TQNzmlsrwkA0pB56WQ4prcpLTpRlEAHZCX-WEVA9q6zZbfLu6aKnh_SKGps1BnM2fbbJxSSK2rsoVd164NmH06bGIV6vUtufJ2m9zdqQ7J19vrcjLL5x_T98l4niNnvM0rChbUCqtCakcZKko9F1AgFB41skpzBwqdEpJJBWzFlQTnUZTd81whH5LHo-8-Nj8Hl1qzaQ6x7k4aAOAlFIXSHQVHCmOTUnTe7GPY2fhrgJo-JdOnZPqUzCmlTvN0crYJ7dZHW2NIZyGTUhfqn3s4csE5d15LzpkWkv8BJZludw</recordid><startdate>20121101</startdate><enddate>20121101</enddate><creator>Marchon, B.</creator><creator>Saito, Y.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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subjects	Carbon Computational fluid dynamics Cross-disciplinary physics: materials science rheology Exact sciences and technology Head-disk interface Heat-assisted magnetic recording Heating lubricant Lubricants Magnetism Materials science Other topics in materials science Physics Surface tension thermocapillary effect thermodiffusion
title	Lubricant Thermodiffusion in Heat Assisted Magnetic Recording
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