Dynamic Orbit-Lattice Interactions for PbF_{2}:Gd^{3+} Single Crystals

• Authors: J. Kuriata , T. Rewaj , N. Guskos
• Languages of publication: EN

Abstracts

EN

Temperature dependence of the second-order spin-lattice coefficients for PbF_{2}:Gd^{3+} is reported. It is shown that the thermal expansion of the crystal lattice contributes only in about 14 % to the observed dependence and the rest should be ascribed to a dynamic coupling between the 4f^{7} electrons and lattice vibrations. The results are parametrized in both the Einstein and the Debye models and it is shown that the phenomenological parameters obtained from such parametrization can be made to coincide in both models if a specific value of the Einstein frequency ω_{E} is properly chosen. Both models of parametrization show that the Γ_{3}_{g} vibrating mode couples to the 4f^{7} electrons much weaker than the Γ_{5}_{g} one.

Keywords

EN

76.30.Kg

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 79
• Issue: 4
• Pages: 531-541

Dates

published

1991-04

received

1990-05-04

(unknown)

1990-11-05

Contributors

author

J. Kuriata

• Institute of Physics, Technical University of Szczecin, Al. Piastów 17, 70-310 Szczecin, Poland

author

T. Rewaj

• Institute of Physics, Technical University of Szczecin, Al. Piastów 17, 70-310 Szczecin, Poland

author

N. Guskos

• Department of Physics, University of Athens, Solonos Str. 104, 10677 Athens, Greece