Rivasto E, Aye M M, Huhtinen H, Paturi P
Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
University of Turku Graduate School (UTUGS), University of Turku, FI-20014 Turku, Finland.
J Phys Condens Matter. 2023 Dec 28;36(13). doi: 10.1088/1361-648X/ad162c.
The superconducting and structural properties of bilayer thin films based on YBaCuO7-x / YBaCuO7-x+6%BaZrOheterstructures have been studied. In a broad range of magnetic field strengths and temperatures, the optimal bilayer film comprises 30% YBCO at the substrate interface and 70% YBCO+6%BZO on the top. The critical current density measured for the optimal bilayer structure is shown to outperform the corresponding single layer films up to almost 60%. The obtained results are comprehensively discussed in the light of our previously published theoretical framework (Rivasto2023075701:1-10). We conclude that the bilayering provides an efficient and easily applicable way to further increase the performance and applicability of high-temperature superconductors in various applications. Consequently, the bilayer films should be seriously considered as candidates for the upcoming generation of coated conductors.
基于YBaCuO7-x / YBaCuO7-x+6%BaZrO异质结构的双层薄膜的超导和结构特性已被研究。在很宽的磁场强度和温度范围内，最佳双层薄膜在衬底界面处包含30%的YBCO，顶部包含70%的YBCO+6%BZO。结果表明，最佳双层结构的临界电流密度比相应的单层薄膜高出近60%。根据我们之前发表的理论框架（Rivasto2023075701:1-10）对所得结果进行了全面讨论。我们得出结论，双层结构为进一步提高高温超导体在各种应用中的性能和适用性提供了一种有效且易于应用的方法。因此，双层薄膜应被认真考虑作为下一代涂层导体的候选材料。
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