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2000 (1)
1Author    Shao-Yi Wu, Wen-Chen ZhengRequires cookie*
 Title    Defect Structure of Co 2+ Center in 05-LiIO 3 Crystal  
 Abstract    In this paper we establish the formulas of EPR g factors g», for 3d 7 ions in trigonal octahedral crys-tals from a cluster approach. In these formulas, the contributions from configuration interaction-and covalency-effects are considered. The parameters related to both effects can be determined from the optical spectra and the structural parameters of the studied crystal. With these formulas, the defect struc-ture of a Co 2+ center in a-LiI0 3 crystal is studied. It is found that, to reach good fits between the cal-culated and observed g», g ± , the O ions between Co 2+ and Li + vacancy (V Li) should shift away from the V u by about 0.49 A. "Hie displacement direction is consistent with those obtained for Cr 3+ , Fe 3+ , and Mn 2 centers in a-LiI0 3 crystals as well as with the expectation based on the electrostatic interac-tion model. 
  Reference    Z. Naturforsch. 55a, 828—832 (2000); received June 29 2000 
  Published    2000 
  Keywords    Electron Paramagnetic Resonance (EPR), Crystal-field Theory, Defect Structure, Co 2+, a-LiI0 3 Crystal 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0828.pdf 
 Identifier    ZNA-2000-55a-0828 
 Volume    55