The cerium metallic radius in AB2 (C15) Laves compounds (A=Ce)
Creators
- 1. Centro Atomico Bariloche, Instituto Balseiro, Universidad Nacional de Cuyo, Bariloche (Argentina)
Description
The anomalous contraction that cerium undergoes when it is the A component in AB2 Laves phase compounds is used to estimate its metallic radius when it is joined to a given B component. In each case, isostructural compounds of trivalent (rare earths) and tetravalent (zizconium, hafnium and thorium) A elements with the same B element are taken as the reference system. The trivalent metallic radius (r3 = 1.846 A) of cerium proposed by Gschneidner and Smoluchowski was confirmed, but a tetravalent metallic radius (r4 = 1.688 A) of cerium which exceeds their value by 1% was obtained. The presence of A-B contacts is related to the intermediate valency behaviour, and the valency calculated for each compound is compared with other physical properties. A distinction between localized conduction band hybridization and interconfigurational fluctuation is proposed. (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
- 1-10
- ISSN
- 0022-5088
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 13698780
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALUMINIUM BASE ALLOYS; CERIUM; CERIUM ALLOYS; COBALT BASE ALLOYS; COMPARATIVE EVALUATIONS; INTERATOMIC DISTANCES; INTERMETALLIC COMPOUNDS; IRIDIUM BASE ALLOYS; IRON BASE ALLOYS; LAVES PHASES; MAGNESIUM BASE ALLOYS; NICKEL BASE ALLOYS; OSMIUM BASE ALLOYS; PLATINUM BASE ALLOYS; RHODIUM BASE ALLOYS; RUTHENIUM BASE ALLOYS; THEORETICAL DATA; VALENCE
- Descriptors DEC
- ALLOYS; ALUMINIUM ALLOYS; COBALT ALLOYS; DATA; DISTANCE; ELEMENTS; INFORMATION; IRIDIUM ALLOYS; IRON ALLOYS; MAGNESIUM ALLOYS; METALS; NICKEL ALLOYS; NUMERICAL DATA; OSMIUM ALLOYS; PLATINUM ALLOYS; RARE EARTH ALLOYS; RARE EARTHS; RHODIUM ALLOYS; RUTHENIUM ALLOYS; TRANSITION ELEMENT ALLOYS