Charge shift model for calculation of electric field gradient in tetragonal closed packed metals
- 19 Downloads
The electronic charge distribution in tetragonal closed packed (tcp) metal is approximated by a collection of spherical charge clouds situated midway between the ions. The anisotropy of the charge distribution is parameterized in terms of a charge shift δ derivable from the lattice parameters and the elastic coefficients of the metal. The electric field gradient (EFG) in the metal can be obtained through lattice summations over the charges. Numerical calculations are made to obtain the EFG in pure indium and indium-based dilute impurity alloys. Fairly good agreement with the experiments is achieved.
KeywordsElectric Field Gladieut Probe Dependence Nuclear Site Charge Cloud Charge Shift
Unable to display preview. Download preview PDF.
- P. Heubes, G. Hempel, H. Ingwersen, R. Keitel, W. Klinger, W. Loeffler and W. Witthuhn,Int. Conf. on Hyperfine Interactions Studied in Nuclear Reactions and Decay, Uppsala, 1974; J. Christiansen, P. Heubes, R. Keitel, W. Loeffler, W. Sandner and W. Witthuhn, Z. Phys. B24(1976)177.Google Scholar
- S. Chandra and H.C. Verma, Phys. Stat. Sol. (b) 131(1985)K73.Google Scholar
- S. Chandra and H.C. Verma, Phys. Stat. Sol. (b) 145(1988)K1.Google Scholar
- R.W.G. Wycoff,Crystal Structures (Wiley, New York, 1948) p. 8.Google Scholar
- American Institute of Physics Handbook, 2nd ed. (McGraw-Hill, New York, 1963) pp. 2–54, table (2e-3A).Google Scholar