INVESTIGADORES
ALONSO Roberto Emilio
congresos y reuniones científicas
Título:
Determinación de los parámetros hiperfinos en función de la temperatura en la solución sólida BaTiO3/BaHfO3
Autor/es:
R. E. ALONSO; P. DE LA PRESA; A.P. AYALA; A. LÓPEZ GARCÍA
Lugar:
San Luis, Argentina
Reunión:
Congreso; 82a. Reunión Nacional de la AFA; 1997
Resumen:
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Abstract
In
the family of the perovskite-type compounds ABO3, the substitution
of the cation B by another one of the same chemical group can strongly alter
the electric properties of the compounds. In this work we present the
experimental results obtained on the solid solution BaTixHf(1-x)O3
in the paraelectric phase for x= 0.70, 0.50, 0.30, 0.10 y 0.05. The samples
were obtained for the solid state reaction method, and characterized by x-ray
diffraction analysis. Then, the hyperfine parameters on the probe 181Ta
occupying B sites as a function of temperature for each concentration were
obtained. The static quadrupole interactions observed are analyzed in terms of
Hf concentration.
