Analytical investigations of β-Al₂O₃ and β″-Al₂O₃ crystals

authored by

F. Tietz, J. Koepke, W. Urland

Abstract

Crystals of the solid electrolytes Na⁺-β-alumina and Na⁺-β″-alumina have been synthesized by high temperature solution growth in Na₂O rich fluxes between 1600 and 1700°C. Chemical analysis revealed varying compositions due to a solid solution for both materials. The mean compositions (Na_1.62Al₁₁O_17.31 for Na⁺-β-Al₂O₃ and Na_1.41Mg_0.62Al_10.45O₁₇ for Na⁺-β″-Al₂O₃) determined by electron probe microanalysis (EPMA) indicate untypical sodium contents for these compounds than described usually. For the analytical measurements certain conditions have to be observed because of the high sodium mobility in these materials.

Organisation(s)

Institute of Physical Chemistry and Electrochemistry
Institute of Inorganic Chemistry

Type

Article

Journal

Journal of crystal growth

Volume

118

Pages

314-318

No. of pages

5

ISSN

0022-0248

Publication date

01.04.1992

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Condensed Matter Physics, Inorganic Chemistry, Materials Chemistry

Electronic version(s)

https://doi.org/10.1016/0022-0248(92)90078-W (Access: Closed)