| 简介 |
Provided is a sintered oxide compact that has high electric conductivity and a small B-value (temperature coefficient), and is suitable for use as an electrically conductive material, and a circuit board that uses the sintered oxide compact. The sintered oxide compact is represented by a composition formula : REaCobNicOx (where RE represents a rare earth element, a + b + c = 1, and 1.3 ≤ x ≤ 1.7), the sintered oxide compact includes a perovskite phase with a perovskite-type oxide crystal structure, and the a, b, and c satisfy the following relationships : 0.459 ≤ a ≤ 0.535, 0.200 ≤ b ≤ 0.475, and 0.025 ≤ c ≤ 0.300. |
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