Evaluation of E– J characteristics of YBCO coated-conductor by AC inductive method using third-harmonic voltage

The E– J characteristics were measured for a YBCO coated-conductor by using AC inductive method of third-harmonic voltage. The results are compared with the measurements obtained by the four probe method and DC relaxation method of magnetization. The results by three kinds of measurements meet approximately on a single curve and E– J curve in a wide range of electric field is obtained. Hence, the third-harmonic voltage method is useful for a continuous measurement of J c property of long coated tape. The obtained E– J characteristics are argued.