Published June 17, 1967
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A crystallographic and spectroscopic study of crystal sites in the 'spinel' structure
Creators
- 1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Description
A crystallographic study on magnesium aluminates led to the determination of crystal site average distortion. A spectroscopic study of transition elements doped spinels gave the position of the doping element in tetrahedral (A) or octahedral (B) sites, and the local distortion of the latter. The comparison of average and local parameters points to differences in the behaviour of doping elements and shows the size of (A) sites are independent of the host crystal composition while the average size of (B) sites varies with the composition. (author)
Availability note (English)
Available from INIS in electronic formAbstract (French)
Une etude cristallographique des aluminates de magnesium a permis de determiner la deformation moyenne des sites cristallins. Une etude spectroscopique des aluminates de magnesium dopes avec des elements de transition a permis de localiser les dopants entre les sites tetraedriques (A) et octaedriques (B) et d'etudier la deformation locale de ces sites. La comparaison entre les parametres moyens et locaux a caracterise le comportement du dopant et montre que les dimensions des sites (A) sont independantes de la composition de la matrice, alors que les caracteristiques geometriques moyennes des sites (B) varient continument avec la composition. (auteur)Files
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Additional details
Additional titles
- Original title (French)
- Etude cristallographique et spectroscopique des sites cristallins dans la structure 'spinelle'
Publishing Information
- Imprint Pagination
- [155 p.]
- Report number
- CEA-R--3356
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 37040589
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ALUMINATES; CRYSTAL DOPING; CRYSTAL LATTICES; LATTICE PARAMETERS; MAGNESIUM OXIDES; PARAMAGNETISM; SPINELS; SYMMETRY; VACANCIES; VAN VLECK THEORY; X-RAY SPECTROSCOPY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; MAGNESIUM COMPOUNDS; MAGNETISM; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; POINT DEFECTS; SPECTROSCOPY
Optional Information
- Notes
- 69 refs.