Lattice site of trivalent impurities in Mg-doped lithium niobate crystals

L. Kovács, L. Rebouta, J. C. Soares, M. F. da Silva, M. Hage-Ali, J. P. Stoquert, P. Siffert, C. Zaldo, Zs Szaller, K. Polgár

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Abstract

The lattice site of trivalent impurities (lutetium, neodymium and indium) was determined in magnesium-doped LiNbO3 crystals by Rutherford backscattering and proton-induced X-ray emission channelling experiments. It was shown that lutetium and indium substitute mainly for lithium ions, while most of the neodymium ions occupy structural vacancy positions. It cannot be excluded, however, that a fraction of the impurities may replace niobium sites. In all of the three crystals an IR absorption band was detected which is attributed to OH- stretching vibrations in M3+ (niobium site)-OH-Mg2+ (lithium site) complex defects.

Original languageEnglish
Pages (from-to)505-508
Number of pages4
JournalMaterials Science and Engineering B
Volume9
Issue number4
DOIs
Publication statusPublished - Sep 7 1991

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kovács, L., Rebouta, L., Soares, J. C., da Silva, M. F., Hage-Ali, M., Stoquert, J. P., Siffert, P., Zaldo, C., Szaller, Z., & Polgár, K. (1991). Lattice site of trivalent impurities in Mg-doped lithium niobate crystals. Materials Science and Engineering B, 9(4), 505-508. https://doi.org/10.1016/0921-5107(91)90081-6