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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


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
Issue number11
Publication statusPublished - 1994 Nov


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

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Electron paramagnetic resonance study of V4+-doped KTiOPO4 single crystals'. Together they form a unique fingerprint.

Cite this