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Proceedings Paper

Measurement of the magnetic anisotropy energy constants for magneto-optical recording media
Author(s): Roger A. Hajjar; Te-Ho Wu; Hong Fu; Masud Mansuripur
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Paper Abstract

Measurement of the magneto-optical polar Kerr effect is performed on rare earth-transition metal (RE-TM) amorphous films using in-plane fields. From this measurement and the measurement of the saturation magnetization using a vibrating sample magnetometer (VSM), the magnetic anisotropy constants are determined. In this paper, we present the temperature dependence of the magnetic anisotropy in the range of -175 degree(s)C to 175 degree(s)C. The results show a dip in the anisotropy near magnetic compensation. This anomaly is explained based on the finite exchange coupling between the rare earth and transition metal subnetworks.

Paper Details

Date Published: 13 August 1992
PDF: 7 pages
Proc. SPIE 1663, Optical Data Storage, (13 August 1992); doi: 10.1117/12.137546
Show Author Affiliations
Roger A. Hajjar, Optical Sciences Ctr./Univ. of Arizona (United States)
Te-Ho Wu, Optical Sciences Ctr./Univ. of Arizona (United States)
Hong Fu, Optical Sciences Ctr./Univ. of Arizona (United States)
Masud Mansuripur, Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 1663:
Optical Data Storage
Donald B. Carlin; David B. Kay; Alfred A. Franken, Editor(s)

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