The cerium oxide stabilized zirconium oxide-based composition and manufacturing method thereof

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Provided is a cerium oxide-stabilized zirconium oxide-based composition that can form a material having both excellent electrical conduction properties and mechanical characteristics, and also provided is a method for producing the same.The cerium oxide-stabilized zirconium oxide-based composition according to the present invention comprises a compound represented by formula (1) : (ZrO)(CeO)(MO)and alumina, wherein in formula (1), the value of x is 0.05 ≤ x ≤ 0.12, the value of a is 0.01 ≤ a ≤ 0.03, and M is at least one rare earth element other than cerium; and the alumina is contained in an amount of 1 mol% or less based on the compound.