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Hyperfine Interactions

, Volume 217, Issue 1–3, pp 17–26 | Cite as

Defect-fluorite oxides: Ln (Eu and Gd) Mössbauer study coupled with new defect-crystal-chemistry model

  • A. Nakamura
  • N. Igawa
  • Y. Okamoto
  • J. Wang
  • Y. Hinatsu
  • M. Takahashi
  • M. Takeda
Article

Abstract

A recently proposed lattice-parameter (a 0(ss)) model for parent fluorite-type MO2-LnO1.5 solid solutions (M4 +   =  Ce and Th; Ln3 +   =  lanthanide) has been extended to more complex LnO1.5-stabilized zirconia (hafnia) (M4 +   =  Zr(Hf)) with pyrochlore-type ordering and its-associated broad a 0(ss) hump, using key Ln (Eu and Gd)-Mössbauer and related local-structure data.

Keywords

Stabilized zirconia (hafnia) Pyrochlore Lattice-parameter model Non-random local structure Metal-oxygen bond length Ln-Mössbauer NMR and EXAFS spectroscopy Extended bond valence sum rule 

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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • A. Nakamura
    • 1
  • N. Igawa
    • 2
  • Y. Okamoto
    • 2
  • J. Wang
    • 3
  • Y. Hinatsu
    • 4
  • M. Takahashi
    • 5
  • M. Takeda
    • 5
  1. 1.Advanced Science Research CenterJapan Atomic Energy AgencyNakaJapan
  2. 2.Quantum Beam Science DirectorateJapan Atomic Energy AgencyNakaJapan
  3. 3.Dalian Institute of Chemical PhysicsChinese Academy of ScienceDalianChina
  4. 4.Department of ChemistryHokkaido UniversitySapporoJapan
  5. 5.Department of ChemistryToho UniversityFunabashiJapan

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