Thermal protrusion of thermally assisted magnetic recording for binary gas mixture with temperature

Kyoung Su Park, Jonghak Choi, No Choel Park, Young Pil Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Thermally assisted magnetic recording (TAMR) system is the most promising next generation magnetic recording technology. In the system, it is important to accurately predict thermal protrusion at near filed transducer (NFT). In this paper, we first constructed an iterative coupled-field analysis process and derived modified heat transfer equation with temperature using diffusion-based effective molecular diameter of gas mixture. Using the simulation process, the thermal protrusion of TAMR head was investigated for various temperature and helium fraction ratios. From the simulation results, the thermal protrusion occurred bigger in low temperature and low helium fraction ratio. And the thermal protrusion of TAMR head with laser diode (LD) was obtained from 3 nm to 1 nm.

Original languageEnglish
Title of host publication2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference
Subtitle of host publicationA Strong Tradition. An Exciting New Look!
Publication statusPublished - 2012
Event2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012 - Singapore, Singapore
Duration: 2012 Oct 312012 Nov 2

Publication series

Name2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!

Other

Other2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012
CountrySingapore
CitySingapore
Period12/10/3112/11/2

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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    Park, K. S., Choi, J., Park, N. C., & Park, Y. P. (2012). Thermal protrusion of thermally assisted magnetic recording for binary gas mixture with temperature. In 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look! [6407551] (2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!).