Crystal-chemistry aspects and electric-field-gradient (EFG) dispersion in Ca-gallogermanate-type structures studied by Mössbauer spectroscopy
National Institute for Materials Physics,
P.O. Box Mg.-07, 76900 Bucharest, Romania
Corresponding author: a firstname.lastname@example.org or pcnet.pcnet.ro
Published online: 15 January 2000
The crystal field disorder in some trigonal germanates of the type XLnyFeGeO14 (X = Ba, Sr; Ln = La, Nd; y = 0, 1) is studied by 57Fe Mössbauer effect. The dispersion of the electric field gradient (EFG) at the octahedral sites of these compounds is investigated. A correlation of the experimental and calculated EFG data with some crystal-chemistry aspects is presented.
PACS: 76.80.+y – Mössbauer effect; other γ-ray spectroscopy
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000