Electron paramagnetic resonance study of V4+-doped KTiOPO4 single crystals

Liu Kuo-Tung Liu, Yu Jiang-Tsu Yu, Lou Ssu-Hao Lou, Lee Chung-Hsien Lee, Huang Yutung Huang, Lii Kwang-Hwa Lii

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Two chemically inequivalent V4+ ions with unequal populations were detected by electron paramagnetic resonance (EPR) in vanadium-doped KTiOPO4 crystals grown by a flux method. The EPR spectra of these two kinds of V4+ ions exhibit axial symmetry, with the symmetry axis almost coincident with the direction of the shortest Ti-O bond, namely, the Ti to a titanyl oxygen bond. These results allow one to identify the occupation sites of the doped V4+ ions and to conclude that the doped V4+ ions form two kinds of covalent bonds with the two chemically inequivalent titanyl oxygens, resulting in two chemically inequivalent VO2+ ions. The EPR linewidths of these two VO2+ ions doped into KTiOPO4 are narrow at room temperature. Moreover, superhyperfine structures due to phosphorus nuclei can be detected at room temperature. These characteristics make the VO2+ ions an excellent EPR spin probe for quality control of KTiOPO4 single crystals.

Original languageEnglish
Pages (from-to)1221-1226
Number of pages6
JournalJournal of Physics and Chemistry of Solids
Volume55
Issue number11
DOIs
Publication statusPublished - 1994 Nov
Externally publishedYes

Keywords

  • A. optical materials
  • D. defects
  • D. electron paramagnetic resonance (EPR)

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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    Kuo-Tung Liu, L., Jiang-Tsu Yu, Y., Ssu-Hao Lou, L., Chung-Hsien Lee, L., Yutung Huang, H., & Kwang-Hwa Lii, L. (1994). Electron paramagnetic resonance study of V4+-doped KTiOPO4 single crystals. Journal of Physics and Chemistry of Solids, 55(11), 1221-1226. https://doi.org/10.1016/0022-3697(94)90202-X