Fabrication of Co2MnAl heusler alloy epitaxial film using Cr buffer layer

Yuya Sakuraba, Jun Nakata, Mikihiko Oogane, Hitoshi Kubota, Yasuo Ando, Akimasa Sakuma, Terunobu Miyazaki

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Thin films of the full-Heusler compound, Co2MnAl, were grown on Cr-buffered MgO(001) substrates at different growth temperature and post-annealing temperature by magnetron sputtering. Atomic force microscopy (AFM) and X-ray diffraction (XRD) measurements show that Cr-buffer layer can largely improve the surface morphology and structural quality of Co 2MnAl film. The (001)-oriented epitaxial growth and B2 structure were confirmed by XRD measurements for all prepared samples. The smallest surface roughness (∼ 2 Å) and an identical Ms value to the bulk value were obtained in the sample which was deposited at ambient temperature and post-annealed at 300°C.

Original languageEnglish
Pages (from-to)6535-6537
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number9 A
DOIs
Publication statusPublished - 2005 Sep 8

Keywords

  • Epitaxial film
  • Half-metal
  • Heusler alloy
  • Magnetic tunnel junction

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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