An outstanding current carrying performance (namely critical current density, J_c) over a broad temperature range of 10–77 K for magnetic fields up to 12 T is reported for films of YBa₂Cu₃O_7−x with Ba₂Y(Nb,Ta)O₆ inclusion pinning centres (YBCO-BYNTO) and thicknesses in the range of 220–500 nm. J_c values of 10 MA cm⁻² were measured at 30 K – 5 T and 10 K – 9 T with a corresponding maximum of the pinning force density at 10 K close to 1 TN m⁻³. The system is very flexible regarding properties and microstructure tuning, and the growth window for achieving a particular microstructure is wide, which is very important for industrial processing. Hence, the dependence of J_c on the magnetic field angle was readily controlled by fine tuning the pinning microstructure. Transmission electron microscopy (TEM) analysis highlighted that higher growth rates induce more splayed and denser BYNTO nanocolumns with a matching field as high as 5.2 T. Correspondingly, a strong peak at the B||c-axis is noticed when the density of vortices is lower than the nanocolumn density. YBCO-BYNTO is a very robust and reproducible composite system for high-current coated conductors over an extended range of magnetic fields and temperatures.

中文翻译：

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通过精细的化学调谐和夹杂物的纳米工程，突破了REBCO涂层导体膜的适用性极限

据报道，具有Ba ₂ Y（Nb）的YBa ₂ Cu ₃ O _{7- x}薄膜在10–77 K的宽温度范围内对高达12 T的磁场具有出色的载流性能（即临界电流密度，J _c），Ta）O ₆夹杂物钉扎中心（YBCO-BYNTO），厚度在220–500 nm之间。在30 K – 5 T和10 K – 9 T下测得10 MA cm ^-2的J _c值，相应的最大钉扎力密度在10 K下接近1 TN m ^-3。该系统在特性和微结构调整方面非常灵活，实现特定微结构的增长窗口很宽，这对于工业加工非常重要。因此，通过微调钉扎微结构可以容易地控制J _c对磁场角的依赖性。透射电子显微镜（TEM）分析强调，较高的生长速率会诱导更多的张开且致密的BYNTO纳米柱，其匹配场高达5.2T。相应地，B ||处有一个很强的峰。C当涡旋的密度低于纳米柱的密度时，会注意到轴。YBCO-BYNTO是一种非常坚固且可重现的复合系统，适用于在较大范围的磁场和温度范围内的大电流涂覆导体。