第三高調波電圧誘導法を用いた高温超電導薄膜の磁場中臨界電流密度の測定

概要

論文の詳細を見る
The nondestructive method was developed for measuring transport properties of high-Tc superconducting films. In this method, an ac magnetic field was applied by a small coil placed just above a superconducting film. A third harmonic voltage is generated due to the nonlinear magnetic response of a superconducting film. The curvature in the applied current vs. the third harmonic voltage curve changes at the threshold current Ith when the magnetic field penetrates the surface of the superconducting film. The comparison of E vs. J characteristics measured by the third harmonic voltage method and the conventional four prove method was demonstrated. The third harmonic voltage method was also applied for measuring the in-field critical current density of high-Tc superconducting film.
熊本大学の論文
2010-03-00