| 摘要 |
An La<SUB>2</SUB>O<SUB>3 </SUB>powder and an SiO<SUB>2 </SUB>powder are mixed with each other, and then heated. By heating, a porous material of La<SUB>X</SUB>Si<SUB>6</SUB>O<SUB>1.5X+12 </SUB>(8<=X<=10) as a composite oxide is produced. Subsequently, the porous material is pulverized to obtain a powder, and the powder is added to a solvent to prepare a slurry. The slurry is solidified in a magnetic field to prepare a compact. After that, the compact is sintered, and an oxide ion conductor is obtained thereby.
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