| Numéro |
J. Phys. I France
Volume 7, Numéro 12, December 1997
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|---|---|---|
| Page(s) | 1701 - 1708 | |
| DOI | https://doi.org/10.1051/jp1:1997164 | |
DOI: 10.1051/jp1:1997164
J. Phys. I France 7 (1997) 1701-1708Electric Field Gradients at
D. Barb, S. Constantinescu and D. Tarina
Institute of Atomic Physics, INFM, PO Box Mg-07, Bucharest, Romania
(Received 16 May 1997, revised 7 July 1997, accepted 24 July 1997)
© Les Editions de Physique 1997
J. Phys. I France 7 (1997) 1701-1708
Electric Field Gradients at
Fe Nuclei in the
Sr
Fe
Ge
O
Trigonal Germanate
D. Barb, S. Constantinescu and D. Tarina Institute of Atomic Physics, INFM, PO Box Mg-07, Bucharest, Romania
(Received 16 May 1997, revised 7 July 1997, accepted 24 July 1997)
Abstract
A computation of the lattice electric field gradient tensor at the octahedral and tetrahedral
Fe
3+ sites in the Sr
3Fe
2Ge
4O
14 trigonal germanate is performed, taking into
account the fractional ionic charges provided by the valence summation procedure. The correlation
of the calculated Mössbauer quadrupole splittings with those found experimentally shows the role
of the local environment distortion in the quadrupole interaction of iron nuclei in this
structure.
© Les Editions de Physique 1997