材料期刊网

The superposition model has been applied to the studies of the zero-field splitting b(2)(0) for AgGaS2: Cr+ crystal and the uniaxial stress EPR data for ZnS: Cr+ crystal. These studies show that for [CrS4](7-) groups in crystals, the intrinsic parameter (b)over-bar(2)(R-0) approximate to -0.035(8)cm(-1) with the reference distance R-0 approximate to 2.378(20) Angstrom and the power-law exponent t(2) approximate to 14(4). To our knowledge, this is the first time that the superposition model parameters (b)over-bar(2) and t(2) are given for Cr+-S2- combination (or other Crc-X combinations). (C) 1999 Published by Elsevier Science B.V. All rights reserved.