Published March 1982
| Version v1
Journal article
Crystallographic and magnetic studies of a new neptunium selenide: Np2Se5
Creators
- 1. Institut Curie, Laboratoire des Transuraniens, Paris (France)
- 2. CEA Centre d'Etudes Nucleaires de Fontenay-aux-Roses, 92 (France). Dept. de Genie Radioactif
Description
A new neptunium selenide Np2Se5 was obtained. It exhibits an orthorhombic pseudotetragonal structure of the Th2S5 type. The lattice parameters are a = 7.725(3) A, b = 7.725(3) A and c = 10.622(5) A. Magnetic susceptibility measurements performed on powder samples between 4.2 and 300 K show a ferromagnetic phase transition at 15 K. 237Np Moessbauer measurements at 4.2 K confirm the magnetic order. The Moessbauer spectrum at 77 K exhibits single quadrupole splitting with an isomer shift of 12.7(5) mm s-1 relative to NpAl2. (Auth.)
Additional details
Publishing Information
- Journal Title
- J. Less-Common Met.
- Journal Volume
- 84
- Journal Issue
- 1
- Series
- J. Less-Common Met.
- Journal Page Range
- 133-137
- ISSN
- 0022-5088
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 13698664
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CHEMICAL PREPARATION; CRYSTAL STRUCTURE; CRYSTALLOGRAPHY; EXPERIMENTAL DATA; ISOMER SHIFT; LATTICE PARAMETERS; LOW TEMPERATURE; MAGNETIC SUSCEPTIBILITY; MEDIUM TEMPERATURE; MOESSBAUER EFFECT; NEPTUNIUM SELENIDES; NEPTUNIUM 237; POWDERS; TEMPERATURE DEPENDENCE; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; X-RAY DIFFRACTION
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; CHALCOGENIDES; COHERENT SCATTERING; DATA; DIFFRACTION; HEAVY NUCLEI; INFORMATION; ISOTOPES; MAGNETIC PROPERTIES; NEPTUNIUM COMPOUNDS; NEPTUNIUM ISOTOPES; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; PHYSICAL PROPERTIES; RADIOISOTOPES; SCATTERING; SELENIDES; SELENIUM COMPOUNDS; SYNTHESIS; TRANSURANIUM COMPOUNDS; YEARS LIVING RADIOISOTOPES