Influence of crystal structure on the perpendicular magnetic anisotropy of an epitaxial CoPt alloy

J. C.A. Huang, A. C. Hsu, Y. H. Lee, T. H. Wu, C. H. Lee

Research output: Contribution to journalConference articlepeer-review

48 Citations (Scopus)

Abstract

CoPt1.1 alloys were prepared on Mo seeding layers on Al2O3(11-20), (1-102), and (1-100) substrates by molecular beam epitaxy. Reflection high energy electron diffraction and X-ray diffraction analysis and polar magnetooptical Kerr effect and extraordinary Hall effect investigations demonstrate a strong correlation between the crystal structure and perpendicular magnetic anisotropy in the alloys. The alloys exhibited distinct crystal structures and chemical ordering for substrate temperatures of 300 and 400 °C. The appearance of the ordered L11(111) phase enhances the perpendicular magnetic anisotropy and the Kerr rotations.

Original languageEnglish
Pages (from-to)5977-5979
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II B
DOIs
Publication statusPublished - 1999 Apr 15
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, USA
Duration: 1998 Nov 91998 Nov 12

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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