Infrared Kerr rotation and magnetic properties of amorphous U-Sb films

Author

Fumagalli, P. ; McGuire, T.R. ; Plaskett, T.S. ; Gambino, R.J.

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

2970

Lastpage

2972

Abstract

Magnetron-sputtered thin films of amorphous U-Sb with various U concentrations x have been measured in the infrared photon energy range as low as 0.65 eV using polar Kerr rotation. For x>50 at.% the polar Kerr spectra are dominated by a broad negative peak near 1 eV. For x<50 at.% this peak is absent and the negative Kerr rotation is strongly increasing towards low energies with some indication of a peak at 0.7 eV. Maximum rotation measured is 2.4° at 1 eV in U₅₁Sb₄₉ at a temperature of 10 K and in a field of 3 T

Keywords

Kerr magneto-optical effect; ferromagnetic properties of substances; infrared spectra of inorganic solids; magnetic properties of amorphous substances; magnetic thin films; sputtered coatings; uranium compounds; 10 K; 3 T; U₅₁Sb₄₉; amorphous U-Sb films; ferromagnetic; infrared photon energy range; magnetic films; magnetic properties; magnetron sputtering; negative Kerr rotation; polar Kerr spectra; Amorphous magnetic materials; Amorphous materials; Argon; Magnetic films; Magnetic properties; Optical films; Optical scattering; Saturation magnetization; Sputtering; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179688

Filename

179688