REBCO高温超导长带临界电流连续化测量及其均匀性表征

Study on the Continuous Measurement and Homogeneity Characterization of Critical Current of High-Temperature Superconductivity Long Band

由于具有高临界转变温度(Tc)、高临界电流密度(Jc)和高上临界磁场(Bc2)等优点,第二代高温超导体(REBCO,RE=稀土元素)得到广泛应用,临界电流(Ic)及其沿长度方向均匀性和n-值是重要的关键参数。文章综述了高温超导长带临界电流及其沿长度方向均匀性以及n-值的测量方法,综合比较了各种测量方法的优缺点,并讨论了各种方法的适用范围、测量条件以及测试数据等,旨在为高温超导长带测量方案提供依据,为后续测量标准的制定提供参考。

Due to merits of high critical transition temperature,high critical current density and high upper critical magnetic field,the second generation high-temperature superconductors have been extensively applied.The critical current and its uniformity along the length and n-value are key parameters.This paper reviews the measurement methods of critical current and its uniformity along the length direction and n-value,elaborates the pros and cons of various measurement methods,and discusses the application scope,measurement conditions and test data of various methods,aiming to provide a basis for the measurement of high-temperature superconductivity long band and offer insights into the formulation of subsequent measurement standards.