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Proceedings Paper

Vibronic structure and g-tensor temperature dependence of K2ZnF4:Cu2+ impurity center
Author(s): A. Yu. Zaharov; A. E. Nikiforov; S. Yu. Shashkin
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Paper Abstract

Adiabatic potential of K2ZnF4:Cu2+ impurity system is calculated within the frames of pair potential approximation and shell model. The Jahn-Teller multi-body energy contribution is approximated by the lower branch of [CuF6] cluster adiabatic potential. It is shown that Q(theta )- and Q(epsilon )-displacements of the distorted octahedron of F ions surrounding Cu impurity ion may be assumed as the normal vibrational modes. Thus K2ZnF4:Cu2+ vibronic states energy spectrum calculation reduces to the solution of the (Exe)-problem with the adiabatic potential, which contains not only the main terms (1/2(DOT)K0(DOT)(rho) 2-Ve(DOT)(rho) ) but also relatively small corrections (-1/2(DOT)(Delta) K(DOT)(rho) 2cos(2(phi) )+F(DOT)(rho) DOTcos(phi ) treated by perturbation theory. g-tensor components temperature dependences calculated by averaging over vibronic levels are consistent with the experimental data. Simulation of hydrostatic pressure influence on the K2ZnF4:Cu2+ properties predicts essential changes in g-tensor components values and temperature dependences.

Paper Details

Date Published: 3 January 1996
PDF: 6 pages
Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); doi: 10.1117/12.229132
Show Author Affiliations
A. Yu. Zaharov, Ural State Univ. (Russia)
A. E. Nikiforov, Ural State Univ. (Russia)
S. Yu. Shashkin, Ural State Univ. (Russia)


Published in SPIE Proceedings Vol. 2706:
Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions
Alexander I. Ryskin; V. F. Masterov, Editor(s)

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