Lubricant Thermodiffusion in Heat Assisted Magnetic Recording

被引：17

作者：

Marchon, B. ^{[1
]}

Saito, Y. ^{[2
]}

机构：

[1] Hitachi GST, San Jose Res Ctr, San Jose, CA 95135 USA

[2] Hitachi Ltd, Hitachi Res Lab, Hitachinaka, Ibaraki 3120034, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2012年 / 48卷 / 11期

关键词：

Head-disk interface; heat assisted magnetic recording; lubricant; thermocapillary effect; thermodiffusion; DEPLETION;

D O I：

10.1109/TMAG.2012.2194138

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：4471 / 4474

页数：4

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