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Defect structure and photorefractive properties of In:Eu:Fe:LiNbO3 Crystals with various Li/Nb ratios

  • Liang Sun*
  • , Fengyun Guo
  • , Qiang Lv
  • , Hongtao Li
  • , Wei Cai
  • , Yuheng Xu
  • , Liancheng Zhao
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Mudanjiang Medical University
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

In: Eu: Fe: LiNbO3 crystals were grown by the Czochralski technique with various ratios of Li/Nb =0.946, 1.051, 1.200, 1.382 in the melt. The crystal composition and defect structure were analyzed by the UV-visible and IR spectroscopy and X-ray diffration. The results showed that increasing the Li/Nb ratio can decrease the In3+ doping threshold concentration of In: Eu: Fe: LiNbO3 crystals. In two-wave coupling experiments, the writing and erasure time constants, maximum diffraction efficiency, photorefractive sensitivity, photoconduction, photovoltaic field and space-charge field of the crystals were measured and calculated. The dependence of the photorefractive properties on the defect structure of In: Eu: Fe: LiNbO3 crystals were discussed.

Original languageEnglish
Pages (from-to)421-426
Number of pages6
JournalJournal of Crystal Growth
Volume307
Issue number2
DOIs
StatePublished - 15 Sep 2007
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • A2. Czochralski methold
  • B1. Lithium compound
  • B2. Photo-refracitve materials

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