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Title /sup 161/Dy Moessbauer spectroscopy studies of divalent and trivalent dysprosium halides and oxyhalides
Creator/Author Friedt, J.M. ; MacCordick, J. ; Sanchez, J.P.
Publication Date1983 Sep 28
OSTI IdentifierOSTI ID: 5507555
Other Number(s)CODEN: INOCA
Resource TypeJournal Article
Resource RelationInorg. Chem. ; Vol/Issue: 22:20
Research OrgCentre de Recherches Nucleaires, Strasbourg, France
Subject400201 -- Chemical & Physicochemical Properties ;400104 -- Spectral Procedures-- (-1987); ;DYSPROSIUM BROMIDES-- STRUCTURAL CHEMICAL ANALYSIS;DYSPROSIUM CHLORIDES-- STRUCTURAL CHEMICAL ANALYSIS;DYSPROSIUM IODIDES-- STRUCTURAL CHEMICAL ANALYSIS; ANTIFERROMAGNETIC MATERIALS;COMPARATIVE EVALUATIONS;CRYSTAL STRUCTURE;ELECTRON DENSITY;ELECTRONIC STRUCTURE;EXPERIMENTAL DATA;HYPERFINE STRUCTURE;LATTICE PARAMETERS;LOW TEMPERATURE;MAGNETIC SUSCEPTIBILITY;MATHEMATICAL MODELS;MEDIUM TEMPERATURE;MOESSBAUER EFFECT;OXYBROMIDES;OXYCHLORIDES;OXYIODIDES;POWDERS;SAMPLE PREPARATION;TEMPERATURE DEPENDENCE;ULTRALOW TEMPERATURE;VALENCE;X-RAY DIFFRACTION
Related SubjectBROMIDES;BROMINE COMPOUNDS;CHLORIDES;CHLORINE COMPOUNDS;COHERENT SCATTERING;DATA;DIFFRACTION;DYSPROSIUM COMPOUNDS;HALIDES;HALOGEN COMPOUNDS;INFORMATION;IODIDES;IODINE COMPOUNDS;MAGNETIC MATERIALS;MAGNETIC PROPERTIES;MATERIALS;NUMERICAL DATA;OXYGEN COMPOUNDS;PHYSICAL PROPERTIES;RARE EARTH COMPOUNDS;SCATTERING
Description/Abstract /sup 161/Dy (dysprosium 161) hyperfine interaction measurements are reported for the dysprosium dihalides DyX/sub 2/, trihalides DyX/sub 3/, and oxyhalides DyOX (X = chlorine, bromine, iodine (Cl, Br, I)) using the 26-keV Moessbauer resonance.^In the dihalides, the electron configuration of dysprosium is divalent (4f/sup 10/).^However, it has been impossible to obtain pure phases of these compounds.^The oxyhalides order antiferromagnetically below 10 K. The hyperfine parameters and the magnetic ordering in these compounds are interpreted in terms of electronic structure with use of a Hamiltonian including electric crystal field and magnetic exchange effects.^The change of mean square nuclear radius of /sup 161/Dy between the ground and 26-keV levels (..delta..(r/sup 2/) = 8.0 x 10/sup -3/ fm/sup 2/) is deduced by combination of the isomer shift results with free-ion electron density calculations.^8 figures, 6 tables.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 2910-2918
System Entry Date2001 May 13

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