【摘要】 高温超导带材的临界电流在 77K不同磁场大小和方向上相差很大 ,表现出强烈的各向异性 .我们对此进行了仔细的实验研究 ,得到了磁场与超导带带面任何夹角情况下临界电流非常简单的解析经验表达式 :只要得到在平行场和垂直场下临界电流的变化特性就可以计算出任何磁场与超导带面夹角下的临界电流 ,计算结果与实验结果吻合得很好 ,对高温超导带材的应用研究具有重要的实际意义 .更多还原

【Abstract】 There is great difference of critical current in HTS tapes under the magnetic field with different magnitude and oritations at 77K, which shows strongly anisotropy of critical current. Based on detailed experiments,a simple analytical empirical relation of critical current is obtained. If critical current characteristics of parallel and perpendicular magnetic fields are known, we can calculate the critical current with any angle between tape surface and directions of magnetic fields. The calculated results are in good agreement with those of experiments, which is important for application of HTS from practical point of view.更多还原