Speaker
Dr
Germán Nicolás Darriba
(Departamento de Física e Instituto de Física La Plata (IFLP, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CC 67, 1900 La Plata, Argentina.)
Description
In this work we present results from Time-Differential Perturbed-Angular Correlations (PAC) experiments in α-Fe2O3 singlecrystals (in their corundum structure) implanted with 181Hf(→181Ta) ions at the ion accelerator facility of the H-ISKP at the Bonn University. The magnitude, asymmetry and orientation of the EFG were determined measuring the spin-rotation curves as a function of the singlecrystal orientation (for three different configurations of the sample) with respect to the laboratory system. The PAC experiments were carried out at 973 K in order to have only the electric-quadrupole interaction in the spectra, since above the Neel temperature (TN=955 K) the system has a paramagnetic behaviour.
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Author
Dr
Germán Nicolás Darriba
(Departamento de Física e Instituto de Física La Plata (IFLP, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CC 67, 1900 La Plata, Argentina.)
Co-authors
Emiliano Luis Muñoz
(Departamento de Física e Instituto de Física La Plata (IFLP, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CC 67, 1900 La Plata, Argentina.)
Mario Rentería
(Departamento de Física e Instituto de Física La Plata (IFLP, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CC 67, 1900 La Plata, Argentina.)
Paul-Dieter Eversheim
(Helmholtz-Institut für Strahlen- und Kernphysik (H-ISKP),Universität Bonn, Nussallee 1416, 53115 Bonn, Germany.)
