Measurement of the magnetic anisotropy energy constants for magneto-optical recording media

Roger A. Hajjar; Te-Ho Wu; Hong Fu; Masud Mansuripur

doi:10.1117/12.137546

13 August 1992 Measurement of the magnetic anisotropy energy constants for magneto-optical recording media

Roger A. Hajjar, Te-Ho Wu, Hong Fu, Masud Mansuripur

Proceedings Volume 1663, Optical Data Storage; (1992) https://doi.org/10.1117/12.137546
Event: Optical Data Storage Topical Meeting, 1992, San Jose, CA, United States

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.

Citation Download Citation

Roger A. Hajjar, Te-Ho Wu, Hong Fu, and Masud Mansuripur "Measurement of the magnetic anisotropy energy constants for magneto-optical recording media", Proc. SPIE 1663, Optical Data Storage, (13 August 1992); https://doi.org/10.1117/12.137546

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