A comprehensive study on the resistivity, magnetization and microstructure is carried out to understand the superconductivity and flux pinning behavior of hot-pressed Sr 0.6 K 0.4 Fe 2 As 2 tapes. The Sr 0.6 K 0.4 Fe 2 As 2 tapes possess excellent properties of high T c = 36.2 K, large transport J c of ∼10 5 A cm −2 at 10 T and 4.2 K, and high pinning potential U 0 / k B with small field-dependence, demonstrating a great potential in high-field applications. The magnetic J c at various temperatures and flux pinning mechanism are exhibited for both B//ab and B//c directions. Notably, a point pinning in combination with surface pinning appears in our samples, resulting in a strong flux pinning force. And the characteristic ratio B irr //c (0 K)/ B irr...

中文翻译：

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Sr 0.6 K 0.4 Fe 2 As 2超导带的强磁通钉扎和反常各向异性

进行了电阻率，磁化强度和微观结构的综合研究，以了解热压Sr 0.6 K 0.4 Fe 2 As 2带的超导性和磁通钉扎行为。Sr 0.6 K 0.4 Fe 2 As 2带具有优良的性能，即高T c = 36.2 K，在10 T和4.2 K时的大传输J c为〜10 5 A cm -2，并且具有高钉扎电位U 0 / k B场依赖性小，在高场应用中显示出巨大的潜力。在B // ab和B // c方向均显示出在各种温度下的磁J c和磁通钉扎机制。值得注意的是，在我们的样本中出现了点钉扎与表面钉扎相结合的情况，从而导致强大的磁通钉扎力。特征比B irr // c（0 K）/ B irr ...