Crystal-chemistry aspects and electric-field-gradient (EFG) dispersion in Ca-gallogermanate-type structures studied by Mossbauer spectroscopy

Authors
Constantinescu, S Tarina, D
Citation
S. Constantinescu et D. Tarina, Crystal-chemistry aspects and electric-field-gradient (EFG) dispersion in Ca-gallogermanate-type structures studied by Mossbauer spectroscopy, EUR PHY J B, 13(1), 2000, pp. 75-81
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
13
Issue
1
Year of publication
2000
Pages
75 - 81
Database
ISI
SICI code
1434-6028(200001)13:1<75:CAAE(D>2.0.ZU;2-I
Abstract
The crystal field disorder in some trigonal germanates of the type X(3-y)Ln (y)Fe(2+y)Ge(4-y)O(14) (X = Ba, Sr; Ln = La, Nd; y = 0, 1) is studied by Fe -57 Mossbauer effect. The dispersion of the electric field gradient (EFG) a t the octahedral sites of these compounds is investigated. A correlation of the experimental and calculated EFG data with some crystal-chemistry aspec ts is presented.