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Evidence for a Structural Origin of Perpendicular Magnetic Anisotropy in PtxCo1−x Thin Film Alloys

Published online by Cambridge University Press:  15 February 2011

T. A. Tyson ,
S. D. Conradson ,
R. F. C. Farrow  and
B. A. Jones
T. A. Tyson
Affiliation:
New Jersey Institute of Technology, Newark, NJ 07102 Los Alamos National Laboratory, Los Alamos NM 87545
S. D. Conradson
Affiliation:
Los Alamos National Laboratory, Los Alamos NM 87545
R. F. C. Farrow
Affiliation:
I. B. M. Research Division, Almaden Research Center, San Jose, CA 95120
B. A. Jones
Affiliation:
I. B. M. Research Division, Almaden Research Center, San Jose, CA 95120
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Abstract

XAFS analysis of the local structure about Pt and Co in PtxCo1−x, for x ˜ 0,7 revealed that the local coordination of Co and Pt is similar to that found in cubic L12 Pt3Co. In the plane of the films, significant Co-Co bonding was found- a feature not present in ordered L12 Pt3Co. The presence of Co-Co bonds, preferentially in-plane, suggest that clustering of Co into “sheets” or “chains” is the source of PMA in these films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 437: Symposium DD – Applications of Synchrotron Radiation to III , 1996 , 67
Copyright
Copyright © Materials Research Society 1996

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