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

R. A. Hajjar, T. H. Wu, H. Fu, M. Mansuripur

Research output: Contribution to journalConference article

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°C to 175°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.

Original languageEnglish (US)
Pages (from-to)225-231
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1663
DOIs
StatePublished - Jan 1 1992
EventOptical Data Storage Topical Meeting 1992 - San Jose, United States
Duration: Feb 9 1992Feb 14 1992

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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