Anisotropic Local Structure of Co-Pd Alloy and Pd/Co Multilayer Films Having Perpendicular Magnetic Anisotropy

1997 ◽  
Vol 475 ◽  
Author(s):  
Sang-Koog Kim ◽  
V.A. Chernov ◽  
J. B. Kortright ◽  
Yang-Mo Koo
Keyword(s):  
Magnetic Anisotropy ◽  
Effective Strain ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films ◽  
Growth Direction ◽  
Alloy Layer ◽  
Diffuse Interface ◽  
Structural Anisotropy ◽  
Strain Anisotropy ◽  
Pd Alloy

ABSTRACTAnisotropie short-range structure in Co-Pd alloy and Pd/Co multilayer films is determined using polarized Co K-edge extended x-ray absorption fine structure. A local modulation of Co fraction exists along the growth direction in the alloy films. Pd underlayer and Pd spacers alternated with the alloy layer influence an effective strain anisotropy. Pd/Co multilayers have an alloy-like region near nominal interfaces by diffuse interface. Pd spacers in the multilayer play a role in coherency strain rather than on broken symmetry of Co atoms. Local structural anisotropy of both strain and chemical environment contribute to the perpendicular magnetic anisotropy observed in these films.

Origins of perpendicular magnetic anisotropy in Ni/Pd multilayer films

1999 ◽  
Vol 85 (8) ◽  
pp. 5762-5764 ◽  
Author(s):  
Jong-Ryul Jeong ◽  
Young-Seok Kim ◽  
Sung-Chul Shin
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films

scholarly journals The perpendicular magnetic anisotropy of CoPt/Au multilayer films

2005 ◽  
Vol 286 ◽  
pp. 301-305 ◽  
Author(s):  
T. Yokota ◽  
L. Gao ◽  
R. Zhang ◽  
L. Nicholl ◽  
M.L. Yan ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films

Perpendicular Magnetic Anisotropy of Pd/Co and Related Multilayers

1991 ◽  
Vol 231 ◽  
Author(s):  
S. Tsunashima ◽  
K. Nakamura ◽  
H. Takahashi ◽  
S. Fukatsu ◽  
S. Uchiyama
Keyword(s):  
Magnetic Anisotropy ◽  
Noble Metal ◽  
Crystal Orientation ◽  
Rf Sputtering ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films ◽  
Surface Anisotropy ◽  
View Point ◽  
Magnetoelastic Energy ◽  
Magnetoelastic Surface

AbstractMultilayer films consists of noble metal (Pd, Pt, Cu, Au, PdSi) and transition metal(Co, Ni, PdCo, PtCo, CoZr) layers were prepared by rf sputtering method on glass and/or MgO single crystal substrates. The perpendicular magnetic anisotropy was examined in relation to the magnetostriction, lattice misfits, crystallinity and crystal orientations. The results suggest that the perpendicular magnetic anisotropy in noble metal/PdCo alloy multilayers originates from the magnetoelastic energy of the PdCo layers under a stress due to the lattice misfits. In both Pd/Co and Pd/Ni multilayers, the anisotropy was found to depend on the crystal orientation, and the dependence is discussed from the view point of the magnetoelastic surface anisotropy.

Pair Ordering Anisotropy In Amorphous Tb-Fe Thin Films

1995 ◽  
Vol 384 ◽  
Author(s):  
T.C. Hufnagel ◽  
S. Brennan ◽  
B.M. Clemens
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Perpendicular Magnetic Anisotropy ◽  
High Energy ◽  
Distribution Functions ◽  
Anisotropy Energy ◽  
Magnetic Anisotropy Energy ◽  
Structural Anisotropy ◽  
Out Of Plane ◽  
Plane Direction

ABSTRACTWe have studied the structural origins of perpendicular magnetic anisotropy in amorphous Tb-Fe thin films by employing high energy x-ray scattering. The as-deposited films show a clear structural anisotropy, with a preference for Fe-Tb near-neighbors to align in the out-of-plane direction. Upon annealing, the magnetic anisotropy energy drops significantly, and we see a corresponding reduction in the structural anisotropy. The radial distribution functions indicate that the number of Fe-Tb near-neighbors increases in the in-plane direction, but does not change in the out-of-plane direction. Therefore, the distribution of Fe-Tb near-neighbors becomes more uniform upon annealing. We conclude that the observed reduction in perpendicular magnetic anisotropy energy is a result of this change in structure.

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