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- W1964793203 abstract "The quantitative relationship between the electron paramagnetic resonance (EPR) parameters D,g∥,g⊥ and the local structure parameters of Cr3+ ion in KZnF3 crystals is established. The local structure for Cr3+ paramagnetic center in KZnF3:Cr3+ crystal has been determined from EPR parameters of Cr3+ ion. This work shows that the trigonal crystal field of Cr3+ ion in KZnF3 crystals comes from following two origins: (1) the nearest-neighbor K+ vacancy caused by the charge compensation in the [1 1 1]-axis direction; and (2) the lattice distortions of the nearest-neighbor fluorine coordination caused by the K+ vacancy and the differences in mass, charge, and radius between Cr3+ ion and Zn2+ ion. The unified calculation of the EPR zero-field splitting and g factors, taking into account the K+ vacancy and the lattice distortions, has been carried out on the basis of the complete diagonalization procedure and the superposition crystal-field model, all calculation results are in excellent agreement with the experimental data. Although the main source of the trigonal crystal field comes from the K+ vacancy caused by the charge compensation, the contribution of the lattice distortion cannot be neglected." @default.
- W1964793203 created "2016-06-24" @default.
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- W1964793203 date "2002-01-01" @default.
- W1964793203 modified "2023-09-26" @default.
- W1964793203 title "Local structure and the electron paramagnetic resonance parameters for the Cr3+ ions at K+-vacancy site in Cr3+:KZnF3 laser crystal" @default.
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- W1964793203 doi "https://doi.org/10.1016/s0304-8853(01)00879-4" @default.
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