Magnetic properties and switching field control of antiferromagnetically coupled recording media

S. N. Piramanayagam, J. P. Wang, X. Shi, S. I. Pang, C. K. Pock, Z. S. Shan, T. C. Chong

Research output: Contribution to journalConference articlepeer-review

23 Scopus citations

Abstract

Recently proposed antiferromagnetic-coupled (AFC) media is studied in detail. The parameters, which control the switching field of the stabilizing layer and hence, the M rδ reduction are understood by theory and experiment. It was observed that the switching field of the stabilizing layer could be controlled by experimental parameters to be on either side of remanence. M rδ reduction could be achieved by a reduction of anisotropy constant, thickness or magnetization of the stabilizing layer. The coercivity and thermal stability of the AFC media is larger than that of a single magnetic layer.

Original languageEnglish (US)
Pages (from-to)1438-1440
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Bibliographical note

Funding Information:
Manuscript received October 13, 2000. This work was supported in part by Hoya Magnetics, Singapore. The authors are with Data Storage Institute, Singapore - 117608 (e-mail: prem@ieee.org;{jpwang; xshi; siewit; zsshan}@dsi.nus.edu.sg). Publisher Item Identifier S 0018-9464(01)05630-8.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

Keywords

  • Anisotropy
  • Antiferromagnetic coupling
  • Magnetic recording
  • Recording media
  • Thermal stability

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