Ionic conduction in Sr hexa-aluminate with β-alumina structure

A new type of strontium β-alumina was developed by a single solid state reaction. Polycrystals of Sr β-alumina with the chemical formula of SrMgAl 10O 17 were prepared and examined by a conductivity. The values of ionic conductivity in the Sr β-alumina were 5 to 3 orders of magnitude lower than thos...

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Bibliographic Details
Published in:Solid state ionics 1988-04, Vol.26 (3), p.183-188
Main Authors: Yamaguchi, Shu, Kimura, Kiyonori, Tange, Masayoshi, Iguchi, Yoshiaki, Imai, Atsuo
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Diffusion in solids
Exact sciences and technology
Physics
Self-diffusion and ionic conduction in nonmetals
Transport properties of condensed matter (nonelectronic)
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Summary:A new type of strontium β-alumina was developed by a single solid state reaction. Polycrystals of Sr β-alumina with the chemical formula of SrMgAl 10O 17 were prepared and examined by a conductivity. The values of ionic conductivity in the Sr β-alumina were 5 to 3 orders of magnitude lower than those of polycrystalline Na β-alumina between 773 and 1273 K. The ion exchange of Sr β-alumina for sodium was also examined, and the values of conductivity for the partially ion-exchanged samples increased with the increase of the excess amount of Na + up to 0.5–0.6 in comparison with that of the ideal Na β-alumina.
ISSN:0167-2738
1872-7689
DOI:10.1016/0167-2738(88)90225-1