Advanced laminated antiferromagnetically coupled recording media with high thermal stability

S. I. Pang, S. N. Piramanayagam, J. P. Wang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A layered structure to improve the antiferromagnetic exchange coupling constant (J) in laminated antiferromagnetically coupled (LAC) media is proposed. This structure has a much larger thermal stability in comparison to simple LAC structures. It also improves the coercivity and decreases the remnant moment-thickness product to achieve a high resolution and a low pulse width. The recording measurements indicate that this structure has a slightly larger noise than the simple LAC structures. However, its overall signal-to-noise ratio (SNR) is comparable to that of the simple LAC structures. High SNR and much higher thermal stability make this structure suitable for ultrahigh areal densities.

Original languageEnglish (US)
Pages (from-to)616-618
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number4
DOIs
StatePublished - Jan 28 2002

Bibliographical note

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

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