FePt fct-(001) texture prepared at lower temperature for perpendicular recording

Yingfan Xu, Jingsheng Chen, Daoyang Dai, J. P. Wang

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

Abstract

FePt thin films with L10 ordered structure (fct-phase) attract high attentions due to their possible use as ultrahigh density recording media. For perpendicular recording, it is essential to have films with the fct-[001] orientating perpendicular to the film plane. Previous study by the authors (IEEE Trans. Magn. vol.37, p.1491-3 (2001)) indicated that addition of Ru to Cr favors to realize Cr[200] orientation. In this paper, an CrRu underlayer with [200] texture is used to control the FePt orientation. It is expected that the FePt fct-[001] texture can be epitaxially grown with crystallographic relationship Cr[200][110]//FePt[001][100]. On the other hand, the expansion strain along the FePt a-axis in the interface may be preferred to transform the fcc to the fct phase. We change the Ru content in Cr to vary the lattice mismatch between the FePt layer and underlayer, in expectation of strain-induced preferred phase transformation and lowering the ordering temperature.

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 - 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
Country/TerritoryNetherlands
CityAmsterdam
Period4/28/025/2/02

Bibliographical note

Publisher Copyright:
©2002 IEEE.

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