Rearrangement of rare earth defects under domain inversion in LiNbO 3

V. Dierolf, C. Sandmann, V. Gopalan, S. Kim, K. Polgar

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7 Scopus citations

Abstract

Using high resolution excitation-emission spectroscopy we investigated the changes occurring in the optical transition of Er3+ ions in LiNbO3 during inversion of the ferroelectric axis. In stoichiometric LiNbO3 we find that a drastic reconfiguration among the different defect sites takes places favoring those centers which have already been dominant in the as-grown sample. The reconfiguration is attributed to changes in the arrangement of the local charge compensators. Furthermore, we find a small shift of the emission transition energy, which is consistent with an increase of the intrinsic electric field. These findings make the Er3+ ions very suitable probes for 3D imaging of domain structures and for in-situ studies of the dynamics of the domain inversion processes and the defect/domain wall interaction.

Original languageEnglish (US)
Pages (from-to)247-250
Number of pages4
JournalRadiation Effects and Defects in Solids
Volume158
Issue number1-6
DOIs
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Condensed Matter Physics

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