کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1234887 | 968838 | 2011 | 4 صفحه PDF | دانلود رایگان |
The spin-Hamiltonian parameters, g factors and hyperfine structure constants, for the tetragonal and cubic Yb3+ centers in AgCl crystal are calculated from the complete diagonalization (of energy matrix) method. The calculations are based on the defect models that the tetragonal Yb3+ center is formed by the substitutional Yb3+ associated with two nearest Ag+ vacancy (VAg) along <001> and <001¯> axes (i.e., C4 axis) owing to charge compensation and in cubic Yb3+ center the two compensators VAg are remote. From the calculations, the spin-Hamiltonian parameters of both Yb3+ centers in AgCl are explained reasonably, the signs of hyperfine structure constants Ai(171Yb3+) and Ai(173Yb3+) are suggested, the above defect models of both Yb3+ centers are confirmed and their defect structures are determined.
The spin-Hamiltonian parameters (g factors and hyperfine structure constants) for the tetragonal and cubic Yb3+ centers in AgCl crystal are calculated from the complete diagonalization (of energy matrix) method. The defect structures of both Yb3+ centers are obtained from the calculation.Figure optionsDownload as PowerPoint slideHighlights
► Spin-Hamiltonian parameters of two Yb3+ centers in AgCl are calculated.
► Calculations are based on the complete diagonalization method.
► Calculated results of both centers show good agreement with the observed values.
► The signs of hyperfine structure constants are suggested.
► The defect structures are obtained from calculations.
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 84, Issue 1, 15 December 2011, Pages 164–167