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Heat-assisted magnetic recording media materials

Published online by Cambridge University Press:  09 February 2018

K. Hono ,
Y.K. Takahashi ,
Ganping Ju ,
Jan-Ulrich Thiele ,
Antony Ajan ,
XiaoMin Yang ,
Ricardo Ruiz  and
Lei Wan
K. Hono
Affiliation:
Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Japan; [email protected]
Y.K. Takahashi
Affiliation:
Magnetic Recording Materials Group, National Institute for Materials Science, Japan; [email protected]
Ganping Ju
Affiliation:
Recording Media Research Center, Seagate Technology, USA; [email protected]
Jan-Ulrich Thiele
Affiliation:
Seagate Technology, USA; [email protected]
Antony Ajan
Affiliation:
Magnetic Recording Media Division, Western Digital Corporation, USA; [email protected]
XiaoMin Yang
Affiliation:
Seagate Technology, USA; [email protected]
Ricardo Ruiz
Affiliation:
Western Digital Corporation, USA; [email protected]
Lei Wan
Affiliation:
Western Digital Corporation, USA; [email protected]
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Abstract

Heat-assisted magnetic recording (HAMR) is being developed as the next-generation magnetic recording technology. High anisotropy granular media such as FePt-C have been demonstrated as HAMR media for ∼2 Tbpsi (terabits per in2) recording density. In order for this technology to reach its full potential of 4–5 Tbpsi, more progress and innovations are needed for the key requirements for HAMR media, including microstructure, design, magnetic distribution, and thermal design. Beyond granular media, heated-dot magnetic recording (HDMR) is planned to extend areal density toward 10 Tbpsi. HDMR combines similar advanced recording layer materials with advanced patterning techniques to fabricate <10-nm rectangular dot media.

Keywords

FePtmagnetic propertiesmicrostructure
Type
Materials for Heat-Assisted Magnetic Recording
Information
MRS Bulletin , Volume 43 , Issue 2: Materials for Heat-assisted Magnetic Recording , February 2018 , pp. 93 - 99
Copyright
Copyright © Materials Research Society 2018 

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