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<p>LiNbO<sub>3</sub>:Mg crystals ([Mg] = 6.0 and 5.54&#xa0;mol%) grown by the Czochralski have been studied. The dopant concentration in both samples exceeds the threshold. The methods for crystals doping were different: directly and homogeneously. The main interest is defect structure of LiNbO<sub>3</sub>:Mg crystals. IR absorption spectroscopy, nuclear magnetic resonance (NMR, <sup>93</sup>Nb and <sup>7</sup>Li) were used for the study. Structure of LiNbO<sub>3</sub>:Mg is almost free of Nb<sub>Li</sub> antisite defects, but defect complexes (2Mg<sub>Li</sub> – 2V<sub>Li</sub>) arise. The work has shown both the effective applicability and good agreement of the results concerning the defect structure of doped LiNbO<sub>3</sub> crystals using IR absorption spectroscopy, NMR (<sup>93</sup>Nb and <sup>7</sup>Li).</p>

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Defects in LiNbO3:mg crystals with dopant concentrations above threshold values

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Alexander V. Yatsenko,
  • Sergey V. Yevdokimov,
  • Mikhail N. Palatnikov,
  • Nikolay V. Sidorov,
  • Olga V. Palatnikova,
  • Diana V. Manukovskaya

摘要

LiNbO3:Mg crystals ([Mg] = 6.0 and 5.54 mol%) grown by the Czochralski have been studied. The dopant concentration in both samples exceeds the threshold. The methods for crystals doping were different: directly and homogeneously. The main interest is defect structure of LiNbO3:Mg crystals. IR absorption spectroscopy, nuclear magnetic resonance (NMR, 93Nb and 7Li) were used for the study. Structure of LiNbO3:Mg is almost free of NbLi antisite defects, but defect complexes (2MgLi – 2VLi) arise. The work has shown both the effective applicability and good agreement of the results concerning the defect structure of doped LiNbO3 crystals using IR absorption spectroscopy, NMR (93Nb and 7Li).