Mean-field analysis of ternary and quaternary rare earth-transition metal alloys for thermomagnetic recording

R. Hajjar, Masud Mansuripur

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A mean-field model for rare-earth-transition-metal RE-TM alloys developed to analyze ternary (TbFeCo) and quaternary (TbGdFeCo, TbDyFeCo) alloys of interest in thermomagnetic recording is described. The model is based on the localized mean-field theory and emphasizes the reduction of adjustable parameters. The experimental magnetization versus temperature curves are compared to the model predictions, and good agreement is obtained in all cases. The exchange parameters and atomic moment values obtained are consistent with the current understanding of these alloys. The possibility of including an intinerant model to account for the 3d transition-metal magnetic electrons is considered.

Original languageEnglish (US)
Pages (from-to)4021-4023
Number of pages3
JournalIEEE Transactions on Magnetics
Volume25
Issue number5
DOIs
StatePublished - Sep 1989

Fingerprint

Transition metal alloys
Rare earths
rare earth elements
transition metals
recording
Transition metals
Mean field theory
Magnetization
moments
magnetization
Electrons
curves
predictions
electrons
Temperature
temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Mean-field analysis of ternary and quaternary rare earth-transition metal alloys for thermomagnetic recording. / Hajjar, R.; Mansuripur, Masud.

In: IEEE Transactions on Magnetics, Vol. 25, No. 5, 09.1989, p. 4021-4023.

Research output: Contribution to journalArticle

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