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

doi:10.1016/0169-4332(92)90512-V

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

Optical Sciences, College of

Research output: Contribution to journal › Article

16 Scopus citations

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 (t_Pd = 9±1 A ̊) and varying Co thickness (2≤t_Co≤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 language	English (US)
Pages (from-to)	776-780
Number of pages	5
Journal	Applied Surface Science
Volume	60-61
Issue number	C
DOIs	https://doi.org/10.1016/0169-4332(92)90512-V
State	Published - 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

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title = "Influence of structure on the magnetic anisotropy of Co/Pd (001) epitaxial superlattices",

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.",

author = "Engel, {Brad N.} and Wiedmann, {Michael H.} and {Van Leeuwen}, {Robert A.} and Falco, {Charles M.} and Lianjun Wu and Noriaki Nakayama and Teruya Shinjo",

year = "1992",

doi = "10.1016/0169-4332(92)90512-V",

language = "English (US)",

volume = "60-61",

pages = "776--780",

journal = "Applied Surface Science",

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T1 - Influence of structure on the magnetic anisotropy of Co/Pd (001) epitaxial superlattices

AU - Engel, Brad N.

AU - Wiedmann, Michael H.

AU - Van Leeuwen, Robert A.

AU - Falco, Charles M.

AU - Wu, Lianjun

AU - Nakayama, Noriaki

AU - Shinjo, Teruya

PY - 1992

Y1 - 1992

N2 - 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.

AB - 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.

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JO - Applied Surface Science

JF - Applied Surface Science

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