Influence d'additifs sur la teneur en défauts de l'alumine gamma = Influence of additives on the concentration of defects in gamma alumina

Abstract : Two series of gamma alumina samples have been characterized by means of the technique of thermoluminescence. The first one concerns products doped with various elements to a fixed concentration (1.5% refered to aluminum ions). The second one consists of alumina doped La3+ and Th4+ ions to a variable concentration between 0,5 and 4%. Two peaks thermoluminescence are present on all the samples. They are attributed to the presence of oxygen vacancies (358K) and hydroxyl ions (438K). The concentration of these two defects is shown to depend on the nature of the additive and its concentration
Type de document :
Article dans une revue
Annales de Chimie, 1990, 15 (6), pp.391-399
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https://hal-emse.ccsd.cnrs.fr/emse-00610450
Contributeur : Andrée-Aimée Toucas <>
Soumis le : vendredi 22 juillet 2011 - 09:37:57
Dernière modification le : mercredi 29 novembre 2017 - 10:07:53

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  • HAL Id : emse-00610450, version 1

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M. Dauzat, Michèle Pijolat, Bernard Guilhot, Michel Soustelle. Influence d'additifs sur la teneur en défauts de l'alumine gamma = Influence of additives on the concentration of defects in gamma alumina. Annales de Chimie, 1990, 15 (6), pp.391-399. 〈emse-00610450〉

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