Ion irradiation and reduction effect on the conductivity and optical absorption of heavily MgO-doped LiNbO 3 single crystals

V. F. Pichugin, A. A. Bulycheva, V. Yu Yakovlev, Ill Won Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The confirmation of Mg Nb defects in heavily MgO doped LiNbO 3 single crystals were investigated through optical absorption, electrical conductivity measurements, optical spectroscopy with nanosecond time resolution, and Raman spectroscopy technique. An increase in the MgO concentration up to 10 mole% provides an essential change of the luminescence of LiNbO 3, the appearance of a supplementary optical absorption band at the 1.1 eV, an alteration of the Raman spectra caused by the formation of (Mg Nb) defects, a shift of the edge of the supplementary optical absorption due to ion irradiation toward the shorter wavelength region as the MgO concentration increases. The effect of Ar + ions irradiation on the conduction of the MgO doped LiNbO 3 samples was studied. The important role of reduction in modification of the conducting properties of the ion-irradiated crystals was established. The increase of the MgO concentration leads to a decrease of the reduction efficiency.

Original languageEnglish
Title of host publicationPhysica Status Solidi C: Conferences
Pages208-211
Number of pages4
Volume2
Edition1
DOIs
Publication statusPublished - 2005

ASJC Scopus subject areas

  • Condensed Matter Physics

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