Crystal structure and magnetic properties of Ba2 R 2/3TeO6 (R = Y, La, Pr, Nd, Sm-Lu) double perovskites

Tai Kong, Robert J. Cava

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6 Scopus citations


A new series of cubic double perovskites BaTeO6 (R = Y, La, Pr, Nd, Sm-Lu) was synthesized via solid state reaction. The and ions are ordered on alternating octahedral sites, with the rare earth sites 2/3 occupied to balance the charge. The lattice parameters decrease monotonically from for Ba2 TeO6 to for Ba2 TeO6. The lattice parameter for R = Y is close to that of Ho. Analysis of the resulting bond lengths indicates a structural relaxation around the R ion site. Ba2 TeO6, Ba2 TeO6 and Ba2 TeO6 show primarily temperature-independent magnetic susceptibility due to the lack of a local rare earth moment. For Ba2 TeO6 and Ba2 TeO6, the susceptibilities are influenced by Van Vleck-like contributions from excited state multiplets. For the remaining members, the Curie-Weiss law is followed with lowerature deviations that can be associated with various degrees of crystalline electric field splitting. No magnetic ordering was observed down to 1.8 K in any of the compounds.

Original languageEnglish (US)
Article number106101
JournalMaterials Research Express
Issue number10
StatePublished - Oct 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys


  • Rare earth magnetism
  • double perovskite
  • powder x-ray diffraction


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