Hyperfine and quadrupole interactions of trigonal Gd-157(3+) centers in SrF2 and BaF2. Analysis of distortions in the nearest atomic environment

Authors
Gorlov, AD Potapov, AP
Citation
Ad. Gorlov et Ap. Potapov, Hyperfine and quadrupole interactions of trigonal Gd-157(3+) centers in SrF2 and BaF2. Analysis of distortions in the nearest atomic environment, PHYS SOL ST, 42(1), 2000, pp. 51-54
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICS OF THE SOLID STATE
ISSN journal
10637834 → ACNP
Volume
42
Issue
1
Year of publication
2000
Pages
51 - 54
Database
ISI
SICI code
1063-7834(2000)42:1<51:HAQIOT>2.0.ZU;2-G
Abstract
Trigonal Gd-157(3+) impurity centers in SrF2 and BaF2 were experimentally s tudied by EPR and double electron-nuclear resonance (DENR) techniques. Para meters of the hyperfine and quadrupole interactions between these centers w ere determined. Possible distortions of the nearest atomic environment of t he impurity centers are estimated within the framework of a superposition m odel using the EPR and DENR data for the centers of cubic and trigonal symm etry in the crystals studied. (C) 2000 MAIK "Nauka/Interperiodica".