The conductive oxide sintered body, the conductive member, a sensor, a piezoelectric element, an

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An electrically conductive oxide sintered compact according to one embodiment of the present invention includes a crystal phase that has a perovskite oxide crystal structure represented by the composition formula : REaCobCucNidOx where RE is a rare-earth element; a+b+c+d=1; and 1.25≤x≤1.75, wherein the values of a, b, c and d respectively satisfy the following conditions : 0.474≤a≤0.512; 0.050≤b≤0.350; 0≤c≤0.250; and 0.050≤d≤0.350.