【摘要】 本文选择两块零电阻温度分别为82K和71K超导性能不同的薄膜样品,同步进行了电阻在外磁场中展宽的测量,并用Palstra所提出的Arrhenius定律研究两样品热激活能的差别。实验发现样品热激活能随磁场增加线性下降。由测量结果推出的不可逆线仍有B-（1-T/T_c）^3/2形式。更多还原

【Abstract】 Two high Tc superconductor YBa2Cu3O7-d thin films, the zero resistance temperature of which were 82K and 71K respectively, were selected for measurement about resistance broadening. The difference in thermal activation energy of the two samples was analyzed with Arrhenius law auggested by Palstra We found that the activation energy decreased depending upon increasing magnetic field. The irreversibi-lity line was B*-(1-T*/Tc)3/2 deduced from our data.更多还原