Title :
The statistical roughness and magnetic surface anisotropy
Author :
Yang, Jyh-Shinn ; Chang, Ching-Ray
Author_Institution :
Div. of Gen. Educ, Nat. Taiwan Ocean Univ., Keelung, Taiwan
fDate :
5/1/1995 12:00:00 AM
Abstract :
The magnetic surface anisotropy in ultrathin films with a distribution of surface roughness is calculated with a magnetostatic model. The surface roughness can give the famous 1/t dependence of shape anisotropy for thick films; however, the anisotropy deviates from 1/t dependence for very thin films. It can be concluded that a rougher film results in a larger surface anisotropy. The calculated results are reasonably consistent with the experiment
Keywords :
ferromagnetism; magnetic anisotropy; magnetic thin films; surface magnetism; surface topography; 1/t dependence; ferromagnetic film; magnetic surface anisotropy; magnetostatic model; shape anisotropy; statistical roughness; surface roughness; ultrathin films; Anisotropic magnetoresistance; Magnetic anisotropy; Magnetic films; Magnetostatics; Perpendicular magnetic anisotropy; Rough surfaces; Shape; Surface roughness; Thick films; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
