Analysis of the crystal-field spectra of the actinide tetrafluorides. I. UF sub 4 , NpF sub 4 , and PuF sub 4

Journal Article · Fri Nov 15 00:00:00 EST 1991 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.461396· OSTI ID:5159665

Carnall, W T; Liu, G K; Williams, C W ^[1]; Reid, M F ^[2]

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1. Chemistry Division, Argonne National Laboratory, Argonne, Illinois (USA)
2. Physics Department, University of Hong Kong (Hong Kong)

An interpretation of the low-temperature absorption spectra of AnF{sub 4} (An=U, Np, Pu) is presented. Using an effective operator Hamiltonian with orthogonalized free-ion operators and initializing crystal-field parameter values based on a superposition model calculation for An{sup 4+} sites with {ital C}{sub 2} symmetry, good agreement between the model calculations and experimentally observed absorption band structure could be obtained. Correlations with published magnetic and heat capacity measurements are discussed.

• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5159665
• Journal Information: Journal of Chemical Physics; (United States), Vol. 95:10; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NEPTUNIUM FLUORIDES
ELECTRONIC STRUCTURE
PLUTONIUM FLUORIDES
URANIUM FLUORIDES
ABSORPTION SPECTRA
ACTINIDE COMPOUNDS
CRYSTAL FIELD
HAMILTONIANS
LOW TEMPERATURE
MEDIUM TEMPERATURE
POLYCRYSTALS
SYMMETRY
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE
CRYSTALS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MATHEMATICAL OPERATORS
NEPTUNIUM COMPOUNDS
PLUTONIUM COMPOUNDS
QUANTUM OPERATORS
SPECTRA
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
360603* - Materials- Properties