RT Journal Article
T1 Temperature-dependence of the hyperfine interaction in the cubic phase of BaHfO₃
A1 Lopez García, , A. R.
A1 Presa Muñoz De Toro, Patricia Marcela De La
A1 Rodiguez, A. M.
AB The temperature dependence of the hyperfine interaction in the paraelectric phase of BaHfO₃ in the temperature range from liquid-nitrogen temperature to 1350 K has been studied. The experimental results show an Abragam-Pound mechanism for the attenuation of the angular correlation. In this cubic structure the attenuation would be consistent with a relaxation mechanism that involves O-ion hopping between vacant sites in the lattice. Using the point-charge model for the estimation of the electric field gradient produced by an O vacancy in the coordination sphere of the probe ion, the process is characterized by a correlation time τ_(c) = 12 ± 1 ps at RT.
PB American Physical Society
SN 1098-0121
YR 1991
FD 1991-11-01
LK https://hdl.handle.net/20.500.14352/60217
UL https://hdl.handle.net/20.500.14352/60217
LA eng
NO 1991 The American Physical Society.We thank Dr. M. Benyacar for the x-ray analysis and interesting comments, Dr. M. Weissmann for fruitful discussion, and Lic. Griselda Polla for the DTG analysis. two of us (A.L.G.) and (A.M.R.) acknowledge CONICET for partial financial support.
NO CONICET, Argentina
DS Docta Complutense
RD 12 abr 2025