Ionic conduction in Sr hexa-aluminate with β-alumina structure
1988; Elsevier BV; Volume: 26; Issue: 3 Linguagem: Inglês
10.1016/0167-2738(88)90225-1
ISSN1872-7689
AutoresShu Yamaguchi, Kiyonori Kimura, Masayoshi Tange, Yoshiaki Iguchi, Atsuo Imai,
Tópico(s)Microwave Dielectric Ceramics Synthesis
ResumoA new type of strontium β-alumina was developed by a single solid state reaction. Polycrystals of Sr β-alumina with the chemical formula of SrMgAl10O17 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.
Referência(s)