Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1621343 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
A theoretical method for investigating the inter-relation between electronic and the molecular structures of a d4 ion in a tetragonal ligand-field has been established on the basis of 210Â ÃÂ 210 complete energy matrix within a weak-field-representation. Using the method, the local structure parameters of CdGa2S4:Cr2+ system are determined by the experimental EPR zero-field splitting (ZFS) spectra. Our results show that the local structure around Cr2+ is a compression distortion and the local lattice structure parameters RÂ =Â 2.46Â Ã
and θ = 57.63° are determined. Moreover, the contributions of the spin singlets to ZFS parameters of Cr2+ ions in CdGa2S4 crystals are investigated for the first time. The results indicate that the spin singlets contributions to ZFS parameter D are negligible, but the contributions to ZFS parameters a and F cannot be neglected.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yang Li, Xiao-Yu Kuang, Zhe Li, Ying Li, Ming-Liang Gao,