Magneto-optical measurement of anisotropy energy constant(s) for amorphous rare earth, transition metal alloys

Author

Uber, R.E. ; Mansuripur, M.

Author_Institution

Boston Univ., MA, USA

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2461

Lastpage

2463

Abstract

Measurements of the anisotropy energy constants of rare-earth-transition-metal (RE-TM) thin films at temperatures from ambient to 150°C are reported. An in-plane magnetic field (up to 16.5 kOe) is applied to a saturated sample with perpendicular magnetization. The movement of magnetization away from the perpendicular direction is monitored using the polar Kerr effect. Due to the limited penetration depth of light at the He-Ne wavelength of 632.8 nm, the Kerr effect is principally due to the top 500 Å of the transition metal subnetwork in the films

Keywords

Kerr magneto-optical effect; magnetic properties of amorphous substances; magnetic thin films; magnetic variables measurement; measurement by laser beam; rare earth alloys; transition metal alloys; 23 to 150 C; 500 A; 632.8 nm; Kerr magnetooptical effects; amorphous alloys; anisotropy energy constants; in-plane magnetic field; magnetic thin films; magnetooptical measurement; penetration depth of light; perpendicular magnetization; polar Kerr effect; rare earth; saturated sample; thin films; transition metal; transition metal subnetwork; Amorphous materials; Anisotropic magnetoresistance; Energy measurement; Glass; Laser beams; Magnetic anisotropy; Magnetic field measurement; Magnetization; Magnetooptic effects; Perpendicular magnetic anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92141

Filename

92141