Growth induced magnetic and chemical anisotropy in CoPt3 alloy films.
We report the results of polarized Co EXAFS experiments on a series of CoPt3 films grown by molecular beam epitaxy on (100) MgO singe crystal substrates over a range of temperatures from 473 K to 1073 K. These samples exhibit substantial perpendicular magnetic anisotropy that is strongly dependent on the substrate growth temperature Tg. We measure a preference for in-plane Co-Co pairs that is correlated with the magnetic properties.
Cross
J O
JO
PNC-CAT, Advanced Photon Source, Argonne National Laboratory, IL 60439, USA. jox@pnc.aps.anl.gov
Newville
M
M
Hellman
F
F
Rooney
P W
PW
Shapiro
A L
AL
Harris
V G
VG