| abstract |
For example, the present invention provides an oxide ion conductor in which the orientation directions of crystals are substantially coincident, and thus has anisotropy in oxide ion conductivity, and a method for manufacturing the same. For example, heat treatment is performed after mixing La 2 O 3 powder and SiO 2 powder. By this heat treatment, a porous body of La X Si 6 O 1.5X + 12 (8 ≦ X ≦ 10), which is a composite oxide, is generated. Next, after the porous body is pulverized into a powder, the powder is added to a solvent to form a slurry. After solidifying this slurry in the presence of a magnetic field to form a molded body, the molded body is sintered to obtain an oxide ion conductor. [Selection diagram] FIG. |