Dielectric relaxation in Yb-doped SrZrO3

O. Kamishima, Y. Abe, T. Ishii, Junichi Kawamura, T. Hattori

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13 Citations (Scopus)

Abstract

The dielectric constant of the proton conductor SrZr1-xYb xO3 (x = 0-0.1) was measured as a function of temperature and frequency. Two well-defined relaxation peaks were observed in SrZrO 3 doped with more than 1 mol% of Yb. The assignment of the two dielectric relaxations is discussed in terms of IR spectra and by free energy calculation for a miscibility of dopant Yb ions. The Yb concentration dependence of the relaxation strength of the two dielectric relaxations is in agreement with the results calculated from the free energy. The two relaxations can be assigned to a reorientation of a single Yb-OH dipole and of Yb-OH dipoles associated with Yb-clusters. The attractive energy for Yb-clustering in SrZrO3 is evaluated at about -85 meV.

Original languageEnglish
Pages (from-to)4971-4981
Number of pages11
JournalJournal of Physics Condensed Matter
Volume16
Issue number28
DOIs
Publication statusPublished - 2004 Jul 21

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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