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


研究成果: 雜誌貢獻期刊論文同行評審

14 引文 斯高帕斯(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.

頁(從 - 到)1221-1226
期刊Journal of Physics and Chemistry of Solids
出版狀態已發佈 - 1994 11月

ASJC Scopus subject areas

  • 一般化學
  • 一般材料科學
  • 凝聚態物理學


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