Static magnetic susceptibility, crystal field and exchange interactions in rare earth titanate pyrochlores

B. Z. Malkin*, T. T. A. Lummen, P. H. M. van Loosdrecht, G. Dhalenne, A. R. Zakirov

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

84 Citations (Scopus)
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Abstract

The experimental temperature dependence (T = 2-300 K) of single crystal bulk and site susceptibilities of rare earth titanate pyrochlores R2Ti2O7 (R = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) is analyzed in the framework of crystal field theory and a mean field approximation. Analytical expressions for the site and bulk susceptibilities of the pyrochlore lattice are derived taking into account long range dipole-dipole interactions and anisotropic exchange interactions between the nearest neighbor rare earth ions. The sets of crystal field parameters and anisotropic exchange coupling constants have been determined and their variations along the lanthanide series are discussed.

Original languageEnglish
Article number276003
Pages (from-to)276003-1-276003-11
Number of pages11
JournalJournal of Physics-Condensed Matter
Volume22
Issue number27
DOIs
Publication statusPublished - 14-Jul-2010

Keywords

  • ANTIFERROMAGNET TB2TI2O7
  • SINGLE-CRYSTAL
  • SPIN ICE
  • HO2TI2O7
  • GD2TI2O7
  • HEAT
  • TRANSITION
  • DY2TI2O7
  • GD2SN2O7
  • YB2TI2O7

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