Crystal Chemistry and /sup 237/Np Mossbauer resonance phase study of A/sub 2/(AnO/sub 2/)/sub 2/V/sub 2/O/sub 8/

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Mater. Res. Bull.; (United States)

DOI:https://doi.org/10.1016/0025-5408(85)90136-9· OSTI ID:6404792

Tabuteau, A; Jove, J; Payes, M; Thevenin, T; Xang, H X

Neptunium carnotite K/sub 2/(NpO/sub 2/)/sub 2/V/sub 2/O/sub 8/ and its Rb and T1 analogues have been synthesized using direct reaction between neptunyl nitrate and K, Rb or T1 metavanadate. The X-ray diffraction spectra of A/sub 2/(NpO/sub 2/)/sub 2/V/sub 2/O/sub 8/ are indexed in the monoclinic system by analogy to the uranium carnotite-like material. The Np phases are thermally much less stable than are the U phases. The /sup 237/Np Mossbauer spectra indicate strong quadrupolar interactions and isomer shift values among the most positive of the hexavalent neptunium compounds.

• Research Organization: Institut Curie, Section de Physique et Chimie Equipe Physicochimie des Transuraniens, Paris
• OSTI ID: 6404792
• Journal Information: Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 20:6; ISSN MRBUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
CARNOTITE
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTALLIZATION
CRYSTALLOGRAPHY
DIFFRACTION
ELEMENTS
HEAVY NUCLEI
ISOMER SHIFT
ISOTOPES
MATERIALS
METALS
MINERALS
MOESSBAUER EFFECT
NEPTUNIUM 237
NEPTUNIUM COMPOUNDS
NEPTUNIUM ISOTOPES
NEPTUNIUM NITRATES
NITRATES
NITROGEN COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHASE STUDIES
PHASE TRANSFORMATIONS
POTASSIUM COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE MINERALS
RADIOISOTOPES
RUBIDIUM COMPOUNDS
SCATTERING
SYNTHESIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSURANIUM COMPOUNDS
URANIUM
URANIUM COMPOUNDS
URANIUM MINERALS
URANIUM VANADATES
VANADATES
VANADIUM COMPOUNDS
X-RAY DIFFRACTION
YEARS LIVING RADIOISOTOPES