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 voor dit werk

OnderzoeksoutputAcademicpeer review

84 Citaten (Scopus)
935 Downloads (Pure)

Samenvatting

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.

Originele taal-2English
Artikelnummer276003
Pagina's (van-tot)276003-1-276003-11
Aantal pagina's11
TijdschriftJournal of Physics-Condensed Matter
Volume22
Nummer van het tijdschrift27
DOI's
StatusPublished - 14-jul.-2010

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