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Finite-size effect on magnetic ordering temperatures in long-period antiferromagnets: Holmium thin films

  • E. Weschke
  • , Holger Ott
  • , E. Schierle
  • , C. Schüß
  • , D. V. Vyalikh
  • , G. Kaindl
  • , V. Leiner
  • , M. Ay
  • , T. Schmitte
  • , H. Zabel
  • , P. J. Jensen
  • Freie Universität Berlin
  • Universität zu Köln, Institut für theoretische Physik
  • Ruhr-Universität Bochum
  • Institut Laue-Langevin

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Resonant magnetic soft x-ray and neutron diffraction were used to analyze the thickness dependence of the helical antiferromagnetic (AFM) ordering temperature TN for thin Ho metal films. TN was found to decrease with film thickness d, in contrast with the Curie temperature of ferromagnets. Mean-field calculations were used to reproduce the observations that suggest a linear relationship between d0 and Lb in long-period antiferromagnets. The results show that d0 agree closely with the bulk AFM period Lb in Ho metal.
Original languageEnglish
Article number157204
Number of pages4
JournalPhysical review letters
Volume2004
Issue numberVolume 93, Issue 15
DOIs
Publication statusPublished - 5 Oct 2004
Externally publishedYes

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