ELECTRICALLY CONDUCTIVE INORGANIC COMPOUND INCLUDING ALKALI METAL

摘要

PROBLEM TO BE SOLVED: To obtain substances having a high electrical conductivity (>10-4Scm-1) at room temperature in a solid solution system of CaO and Al2O3. SOLUTION: The substances include a 12CaO-7Al2O3compound including alkali metal atoms or ions of a concentration of≥1x1018cm-3, a 12SrO-7Al2O3compound including alkali metal atoms or ions of a concentration of≥1x1018cm-3, and further a mixed crystal compound of 12CaO-7Al2O3and 12SrO-7Al2O3including alkali metal atoms or ions of a concentration of≥1x1018cm-3. These compounds have an electrical conductivity of≥10-4Scm-1. COPYRIGHT: (C)2004,JPO