Electric-field gradients in ionic gadolinium compounds
- 28 July 1979
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 12 (14) , 2897-2906
- https://doi.org/10.1088/0022-3719/12/14/024
Abstract
The calculation of the electric-field gradients (EFGs) in a number of ionic gadolinium compounds is considered. The lattice EFGs at the sites of Gd3+ ions have been evaluated by means of a point-charge model. Comparison of the results with quadrupole-splitting data yields a value of -75+or-2 for the Sternheimer antishielding factor gamma infinity for the Gd3+ ion. The accuracy of the lattice EFGs is discussed in terms of uncertainties in the structural parameters, the assumption of complete ionicity and the omission of ionic polarisabilities.Keywords
This publication has 23 references indexed in Scilit:
- Determination of the nuclear parameters of155Gd excited states using the Mössbauer effectHyperfine Interactions, 1977
- Electric field gradients in pyrochlore compoundsJournal of Physics and Chemistry of Solids, 1977
- Determination of the electrostatic contributions to lanthanide quadrupolar crystal fieldsJournal of Physics C: Solid State Physics, 1975
- Mössbauer-effect studies of excited states of 155Gd, 156Gd and 157GdNuclear Physics A, 1974
- Mossbauer effect study of gadolinium compounds using155GdJournal of Physics C: Solid State Physics, 1973
- Sternheimer Shielding-Antishielding; Rare-Earth IonsPhysical Review A, 1973
- A new interpretation of the ground state splitting in Gd3+Journal of Physics C: Solid State Physics, 1972
- Electric Field Gradient Calculations in Transition-Metal SesquioxidesPhysical Review B, 1966
- Investigation into the Origin of Crystalline Electric Field Effects on Rare Earth Ions: I. Contribution from Neighbouring Induced MomentsProceedings of the Physical Society, 1963
- Die elektrische Quadrupolaufspaltung von Al27in Spinell MgAl2O4und Korund Al2O3Zeitschrift für Kristallographie, 1962