INTERACCIONES HIPERFINAS EN EL SISTEMA PbZrO3

R. E. ALONSO; A. LÓPEZ GARCÍA

Anales Asociacion Quimica Argentina

Año: 1995 vol. 83 p. 333 - 339

Abstract In the present work we study the quadrupolar hyperfine interaction in the Zr-site of PbZrO3 policrystalline as a function of temperature. For this purpose we used the Time Diferential Perturbed Angular Correlation (TDPAC) spectroscopy, using the gamma-gamma cascade of 181Hf wich is present with a 4% abundancy in natural Zr. This nucleus was irradiated with thermal neutrons after the sample preparation. Here we present the quadrupolar frecuency and the asymmetry and distribution parameters, for several temperatures from RT to 973K above and below the Curie point.