Evidence for diffuse interfaces and tensile in-plane strains in evaporated Co/Pd(111) multilayers and their role in perpendicular magnetic anisotropy

The local structure surrounding Co atoms in Co/Pd(1 1 1) multilayers, [Co x Angstrom + Pd 24 Angstrom] x 13 is investigated using polarized extended X-ray absorption fine structure(PEXAFS). The PEXAFS results show there is a considerable amount of Co-Pd alloy-like phase near interfaces, e.g., 31 at.% Co for x = 3.2 in a range extending 2.5 Angstrom on either side of the nominal Co layer. The in-plane tensile strains mainly lead to out-of-plane magnetization, combined with a much more negative value of the magnetostriction coefficient lambda(111) of the alloy phase. The alloy-like region should be considered in experiments and theories.
Publisher
ELSEVIER SCIENCE BV
Issue Date
1997-06
Language
ENG
Keywords

FILM LAYERED STRUCTURES; CIRCULAR-DICHROISM; CO/CU MULTILAYERS; FE FILMS; SUPERLATTICES; MOMENT; PD/CO; ALLOY

Citation

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.170, no.1-2, pp.7 - 12

ISSN
0304-8853
DOI
10.1016/S0304-8853(97)00060-7
URI
http://hdl.handle.net/10203/71488
Appears in Collection
RIMS Journal Papers
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