INVESTIGADORES
RENTERIA Mario
artículos
Título:
Electric Field Gradients in Semiconductors and Insulators: Empirical Correlation Found in Binary Oxides
Autor/es:
M. RENTERÍA; C.P. MASSOLO; A.G. BIBILONI
Revista:
MODERN PHYSICS LETTERS B
Editorial:
WORLD SCIENTIFIC PUBL CO PTE LTD
Referencias:
Lugar: London, UK; Año: 1992 vol. 6 p. 1819 - 1825
ISSN:
0217-9849
Resumen:
For the first time a well defined correlation between local
and lattice contributions of the electric field gradient in
semiconductors and insulators is presented. The local component of the
electric field gradient in binary oxides, originated in extraionic
contributions, is extracted from all quadrupole coupling constants
measured in Perturbed Angular Correlation experiments with 111Cd
probes. The resulting systematics reveals a linear dependence of the
local component over a wide range of ionic efg values, both contributing
with opposite signs. The clustering of the data points is explained in
terms of the oxygen near neighbor symmetry.