Observation of internal interfaces in Pt{sub {ital x}}Co{sub 1{minus}{ital x}} ({ital x}{approx_equal}0.7) alloy films: A likely cause of perpendicular magnetic anisotropy

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R3702· OSTI ID:286706

Tyson, T A; Conradson, S D ^[1]; Farrow, R F; Jones, B A ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. IBM Research Division, Almaden Research Center, San Jose, California 95120 (United States)

X-ray-absorption measurements of the local structure about Pt and Co in thin polycrystalline Pt{sub 0.72}Co{sub 0.28} alloy films, which exhibit perpendicular magnetic anisotropy, indicate that the gross structure is fcc. However, the data reveal a directional anisotropy in the number of Co-Co bonds with an excess of Co-Co bonds in the film plane, consistent with two-dimensional clustering of Co. The resulting internal interfaces are analogous to those in Co/Pt multilayers suggesting a similar mechanism for the perpendicular magnetic anisotropy in these alloys. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286706
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 6; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PLATINUM BASE ALLOYS
THIN FILMS
COBALT ALLOYS
MAGNETIC PROPERTIES
MAGNETIC MATERIALS
MICROSTRUCTURE
PHASE STUDIES
X-RAY SPECTRA
ABSORPTION SPECTRA
SYNCHROTRON RADIATION
MULTILAYERS