Frequency shift of Raman modes due to an applied electric field and domain inversion in LiNbO3

Greg Stone, Brian Knorr, Venkatraman Gopalan, Volkmar Dierolf

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21 Scopus citations

Abstract

We report changes in the frequency of Raman modes in lithium niobate that are observed under the application of external applied electric fields and after domain inversion. Inspection of the Raman peaks reveals that after domain inversion, the internal field of the crystal is reduced. A comparison of the respective frequency shifts for the different Raman modes indicates that this change in the local internal field is not limited to the ferroelectric axis, but the fields orthogonal to the ferroelectric axis also change. The Raman modes also reveal that the strength of the internal field is dependent on the concentration of intrinsic defects present in the crystal.

Original languageEnglish (US)
Article number134303
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number13
DOIs
StatePublished - Oct 13 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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