Title :
Highly localized surface modes in epitaxial W/Ni/W films
Author :
Suran, G. ; Rothman, J. ; Meyer, C.
Author_Institution :
Lab. Louis Neel, CNRS, Grenoble, France
fDate :
7/1/1998 12:00:00 AM
Abstract :
Non-propagating surface resonance modes have been observed on epitaxial W/Ni/W and W/Ni films. These modes are excited when the surface of the W buffer layer exhibits some roughness. The resonance fields of the modes are independent of the thickness of the Ni, the modes exhibit exceptionally small linewidths and very weak intensities. The results are interpreted using the model of surface spin waves, related to the variations of the exchange constant near the interfaces
Keywords :
ferromagnetic resonance; magnetic epitaxial layers; magnetic multilayers; nickel; spin waves; surface magnetism; surface topography; tungsten; W buffer layer; W-Ni-W; epitaxial films; exchange constant; localized surface modes; surface resonance modes; surface roughness; surface spin waves; Buffer layers; Epitaxial growth; Magnetic films; Magnetic resonance; Rough surfaces; Saturation magnetization; Substrates; Surface roughness; Surface waves; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
