高温超导材料电阻转变的微分曲线

THE DERIVATIVE CURVE OF THE RESISTIVE TRANSITION IN HIGH-Tc SUPERCONDUCTING MATERIALS

采用数据采集系统,在测量氧化物高T_C超导材料R(T)曲线的同时,可得到其微分曲线。除可确切地定出T_C,△T_C等参数外,还能突出地显示转变区中的一些细微变化。

The curves of the temperature derivative of the resistance can be easily obtained while the R(T)curves of high Tc superconducting oxides are measured by using an automatic data collection system., Apart from that the parameters, such as Tc and △Tc can be determined more conveniently and exactly from the derivative curve, some fine variations w-hich do not appear apparently in the transition region of the R(T)cur-Ve can be explored.