Origin of thermal stability in laminated antiferromagnetically coupled media

S. N. Piramanayagam, C. H. Hee, S. I. Pang, J. P. Wang

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

Abstract

Recently, laminated antiferromagnetically coupled (LAC) media were introduced to overcome the thermal stability issues of longitudinal recording. It is proven that this media shows a better thermal stability at lower Mrδ values. However, there has been some controversy in the origin of thermal stability. Lohau et al. (Appl. Phys. Lett. vol.78, p.2748 (2001)) has reported that the thermal stability of LAC media is independent of bottom layer thickness. Theories based on single-grain also indicate the thermal stability is determined by the top layer properties and the antiferromagnetic coupling constant, J. On the other hand, there are some experimental studies, which indicate that the bottom layer parameters contribute very much to thermal stability. At present, there is no clear understanding on the origin of improved thermal stability in LAC media. In order to extend the life of longitudinal recording, it is essential to understand the origin of improved thermal stability in LAC media. Therefore, in this study, we carry out experiments to understand the thermal stability in LAC media.

Original languageEnglish (US)
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
StatePublished - Jan 1 2002
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: Apr 28 2002May 2 2002

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
CountryNetherlands
CityAmsterdam
Period4/28/025/2/02

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