TY - GEN
T1 - Thermal protrusion of thermally assisted magnetic recording for binary gas mixture with temperature
AU - Park, Kyoung Su
AU - Choi, Jonghak
AU - Park, No Choel
AU - Park, Young Pil
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84873102974
SN - 9789810720568
T3 - 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!
BT - 2012 Digest APMRC - Asia-Pacific Magnetic Recording Conference
T2 - 2012 Asia-Pacific Magnetic Recording Conference: A Strong Tradition. An Exciting New Look!, APMRC 2012
Y2 - 31 October 2012 through 2 November 2012
ER -