Theoretical Studies of ESR Parameters and Local Lattice Structure of the Vanadate-Lithium-Borate Glasses |
| W.L. Fenga,b,c, M.F. Zhaod, T. Lia, X.H. Zhanga and J.Y. Xued
aDepartment of Applied Physics, Chongqing University of Technology, Chongqing 400054, China bChongqing Key Laboratory of Time Grating Sensing & Advanced Testing Technology, Chongqing, 400054, China cDepartment of Electronic Information and Automation, Chongqing University of Technology, Chongqing 400054, China dInternational Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China |
| Received: October 1, 2011; Revised version: February 1, 2012; In final form: February 4, 2012 |
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| Electron spin resonance spectral parameters of V4+ ions in vanadate-lithium-borate glasses have been calculated by the crystal-field theory. The theoretical results are g∥ = 1.940, g⊥ = 1.983 and A∥ = -175×10-4 cm-1, A⊥ = -65×10-4 cm-1 which are good agreement with the experimental values (g∥ = 1.939(3), g⊥ = 1.998(3) and A∥ = (170.6-176.4)×10-4 cm-1, A⊥ = (61.3-71.4)×10-4 cm-1). In addition, the bond lengths of the local lattice structure are, respectively, R∥ = 1.5 Å and R⊥ = 1.95 Å which have been shown to have a compressed tetrahedral geometry along the C4 axis. |
| DOI: 10.12693/APhysPolA.122.167 PACS numbers: 71.70.Ch, 75.10.Dg, 61.72.Bb, 76.30.Fc |