Neutron scattering and crystal field studies of the rare earth double perovskite Ba2ErSbO6

S. Calder, T. Fennell, W. Kockelmann, G. C. Lau, Robert Joseph Cava, S. T. Bramwell

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Abstract

The rare earth double perovskite Ba2ErSbO6 contains an ordered face-centred cubic lattice of Er3+ ions, suggesting that this material is a candidate for showing the effects of geometric magnetic frustration. Crystal field effects have also been shown to be important in this series. We report a systematic experimental study involving neutron scattering and bulk measurements that show no evidence of long ranged magnetic order or spin glass freezing down to 70mK. A description of the system in terms of a crystal field scheme is established from inelastic neutron scattering. These measurements rule out significant magnetic coupling and show that all observed properties are fully explained by a model of uncoupled magnetic Er3+ ions.

Original languageEnglish (US)
Article number116007
JournalJournal of Physics Condensed Matter
Volume22
Issue number11
DOIs
StatePublished - Mar 12 2010

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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