IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
PAC study of the dynamic hyperfine interactions at 111In-doped Sc2O3 semiconductor and comparison with ab initio calculations
Autor/es:
E. L. MUÑOZ; D. RICHARD; A. W. CARBONARI; L. A: ERRICO; M. RENTERIA
Lugar:
Ginebra, Suiza
Reunión:
Conferencia; 3rd Joint International Conference on Hyperfine Interactions & International Symposium on Nuclear Quadrupole Interaction; 2010
Institución organizadora:
CERN
Resumen:
perturbed-angular-correlation (PAC) measurements were performed in 111In-difussed Sc2O3 polycrystals in order to characterize the electric-field-gradient (EFG) tensor at 111Cd nuclei located at the two non-equivalent cation sites of the host lattice. The experimental data were is compared with ab initio calculations performed using the Full-Potential Augmented Plane Wave plus local orbital (FP-APW+lo) method in the framework of the Density Functional Theory (DFT). The PAC experiments were carried out in air in the temperature range 10 K–900 K. The spectra present a strong damping below 650 K. This damping is associated with  A model based in the population of impurity levels induced by the Cd probes (in excellent agreement with FP-APW+lo results) is proposed in order to explain the origin of the observed dynamic interactions. 
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