Influence of structure on the magnetic anisotropy of Co/Pd (001) epitaxial superlattices

Brad N. Engel, Michael H. Wiedmann, Robert A. Van Leeuwen, Charles M. Falco, Lianjun Wu, Noriaki Nakayama, Teruya Shinjo

Research output: Contribution to journalArticle

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Abstract

We have used molecular beam epitaxy to grow Co/Pd superlattices oriented along the fcc [001] crystal direction. A series of samples of fixed Pd thickness (tPd = 9±1 A ̊) and varying Co thickness (2≤tCo≤8 A ̊) was prepared. The uniaxial magnetic anisotropy in these films displayed both a large perpendicular interface contribution and a large in-plane volume contribution. Using off-axial X-ray diffraction techniques to measure the fcc (113) Bragg reflection, the in-plane lattice spacing of three samples was directly measured. These measurements are consistent with a coherent strain model with the Co layers expanded in-plane by 8.0%±0.5% over that of bulk fcc Co. An estimate of the in-plane magnetoelastic energy calculated from this strain is in very good agreement with our observed volume anisotropy in these superlattices.

Original languageEnglish (US)
Pages (from-to)776-780
Number of pages5
JournalApplied Surface Science
Volume60-61
Issue numberC
DOIs
StatePublished - 1992

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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    Engel, B. N., Wiedmann, M. H., Van Leeuwen, R. A., Falco, C. M., Wu, L., Nakayama, N., & Shinjo, T. (1992). Influence of structure on the magnetic anisotropy of Co/Pd (001) epitaxial superlattices. Applied Surface Science, 60-61(C), 776-780. https://doi.org/10.1016/0169-4332(92)90512-V