Theoretical investigation of temperature induced phase transition in exchange coupled double layers

R. Sbiaa, H. Le Gall, O. Koshkina, M. El Harfaoui

Research output: Contribution to journalArticle

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Abstract

In the present work the mean field theory is used to determine the magnetic properties of a GdCo "planar" layer under exchange interaction with a TbFeCo "perpendicular" layer. The magnetization distributions φ1 nd φ2 in the planar and perpendicular layers are determined from a micromagnetic model using a variational method of the magnetic energies in the temperature range 0-500 K. φ2 presents small change with the temperature. On the other hand, φ1 and its mean value 〈φ1〉 are very sensitive to the temperature and the layer composition and thickness. A temperature induced phase transition with a magnetization reorientation from in-plane to a perpendicular direction can be induced in the planar layer in a temperature window ΔT which depends on its compensation temperature TCPI and its thickness which has to be lower than a critical value.

Original languageEnglish
Pages (from-to)5236-5238
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2B
Publication statusPublished - Apr 15 1997

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temperature
magnetization
temperature compensation
retraining
magnetic properties
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Theoretical investigation of temperature induced phase transition in exchange coupled double layers. / Sbiaa, R.; Le Gall, H.; Koshkina, O.; El Harfaoui, M.

In: Journal of Applied Physics, Vol. 81, No. 8 PART 2B, 15.04.1997, p. 5236-5238.

Research output: Contribution to journalArticle

Sbiaa, R, Le Gall, H, Koshkina, O & El Harfaoui, M 1997, 'Theoretical investigation of temperature induced phase transition in exchange coupled double layers', Journal of Applied Physics, vol. 81, no. 8 PART 2B, pp. 5236-5238.
Sbiaa, R. ; Le Gall, H. ; Koshkina, O. ; El Harfaoui, M. / Theoretical investigation of temperature induced phase transition in exchange coupled double layers. In: Journal of Applied Physics. 1997 ; Vol. 81, No. 8 PART 2B. pp. 5236-5238.
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