Electronic and magnetic properties of metal diiodides MI/sub 2/ (M=V, Cr, Mn, Fe, Co, Ni, and Cd) from /sup 129/I Moessbauer spectroscopy
The hyperfine interaction parameters at the iodine site in various metal diiodides (M=V, Cr, Mn, Fe, Co, Ni, and Cd) were measured using the 27.8 keV Moessbauer transition in /sup 129/I. Charge densities in the valence orbitals are deduced from an interpretation of isomer shift and quadrupole coupling constant values. Magnetic hyperfine interactions transferred at the originally diamagnetic iodine ion in the magnetically ordered phases of the compounds allow one to determine the unpaired spin densities in the valence orbitals. Information relative to the magnetic structures is obtained from the number and intensities of magnetically nonequivalent sites and from the relative orientation between the transferred field and the electric field gradient axes. The Moessbauer spectra of /sup 129/Xe impurities created by ..beta../sup -/ decay of /sup 129/I in the NiI/sub 2/ lattice reveal the absence of bonding of xenon atoms in this matrix. (AIP)
- Research Organization:
- Laboratoire de Chimie Nucleaire, Centre de Recherches Nucleaires, Strasbourg, France
- OSTI ID:
- 7343248
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:12; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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400201 -- Chemical & Physicochemical Properties
CADMIUM COMPOUNDS
CADMIUM HALIDES
CADMIUM IODIDES
CHROMIUM COMPOUNDS
CHROMIUM IODIDES
COBALT COMPOUNDS
COBALT IODIDES
ELECTRONIC STRUCTURE
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
ISOMER SHIFT
MAGNETIC PROPERTIES
MANGANESE COMPOUNDS
MANGANESE HALIDES
MANGANESE IODIDES
MOESSBAUER EFFECT
NICKEL COMPOUNDS
NICKEL IODIDES
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM IODIDES