Title :
Magneto-optical Kerr spectra of non-equilibrium Au-Co alloy films and Au/Co multilayer films
Author :
Yamaguchi, A. ; Yamamoto, A. ; Iwata, S. ; Tsunashima, S.
Author_Institution :
Dept. of Electron., Nagoya Univ., Japan
fDate :
11/1/1995 12:00:00 AM
Abstract :
The magneto-optical Kerr effect was measured for non-equilibrium Au-Co alloy films prepared by rf magnetron sputtering. From the result of XRD and TEM, it was confirmed that the Au-Co alloy films with Co contents below 48 at% consist of a single fcc phase. The spectra of the Kerr rotation θK of the films showed two peaks, which were observed at E=1.4 and 3.4 eV. The shape of θK spectra was very different from that obtained from a calculation using an effective dielectric tensor of the film consisting of Co clusters dispersed in Au matrices. It approached the calculated one after annealing
Keywords :
Kerr magneto-optical effect; annealing; cobalt; cobalt alloys; gold; gold alloys; infrared spectra; magnetic multilayers; magnetic thin films; spectral line breadth; sputter deposition; visible spectra; 0.9 to 5 eV; 250 to 1500 nm; Au matrices; Au-Co; Au/Co multilayer films; Co clusters; Kerr rotation; TEM; XRD; annealing; effective dielectric tensor; fcc phase; magneto-optical Kerr spectra; nonequilibrium Au-Co alloy films; rf magnetron sputtering; spectral shape; Cobalt alloys; Dielectrics; Dispersion; Gold; Kerr effect; Magnetooptic effects; Shape memory alloys; Sputtering; Tensile stress; X-ray scattering;
Journal_Title :
Magnetics, IEEE Transactions on
