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首页> 外文期刊>Physica, C. Superconductivity and its applications >Superconducting properties of ErBCO films with BaMO3 nanorods (M = Zr and Sn) by pulsed laser deposition
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Superconducting properties of ErBCO films with BaMO3 nanorods (M = Zr and Sn) by pulsed laser deposition

机译：脉冲激光沉积含BaMO3纳米棒（M = Zr和Sn）的ErBCO薄膜的超导性能。

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摘要

Ba complex oxides Such as BaMO3 (BMO, M = Zr and Sn) were incorporated into ErBa2Cu3O7-delta (ErBCO) films on SrTiO3 (STC) substrates for realizing higher critical current densities U,) in magnetic fields. Nanorods of BMO were formed in the ErBCO films with the rod diameter of about 10-20 nm. Crystal grain alignment of both ErBCO films with BZO and BSO were found to be worse with increasing the doping concentration of BMO into the films, resulting in critical temperature (T-c) degradation for the ErBCO films. J(c), of the ErBCO films were enhanced by the corporation of these BMO nanorods in the magnetic fields (B) applied particularly parallel to the c-axis (B//c). Additionally, it was observed that the J(c) values of the ErBCO films with BSO were higher than those of ErBCO films with BZO in the all measured magnetic fields (B//c), which indicated that the BSO nanorods acted as more effective pinning centers in ErBCO films. Extremely high J(c) of 0.41 MA/cm(2) was performed for the ErBCO film with BSO of 4.9 mol% in the magnetic field (B//c) of 3 T. We concluded that not only the decision of pinning materials, but also optimization of the three factors of crystallinity of the superconducting film, Tc of the superconducting film, and doping concentration of the pinning materials into the superconducting film were important to realize higher J(c) in a magnetic field.
机译：将Ba复合氧化物如BaMO3（BMO，M = Zr和Sn）掺入SrTiO3（STC）衬底上的ErBa2Cu3O7-δ（ErBCO）膜中，以实现磁场中更高的临界电流密度U，）。 BMO的纳米棒形成在ErBCO膜中，棒直径约为10-20 nm。人们发现，随着BMO掺杂到薄膜中，ErBCO薄膜与BZO和BSO的晶粒排列都变差，导致ErBCO薄膜的临界温度（T-c）降低。这些BMO纳米棒在磁场（B）特别是平行于c轴（B // c）的作用下，增强了ErBCO膜的J（c）。此外，观察到在所有测量的磁场（B // c）下，含BSO的ErBCO膜的J（c）值均高于含BZO的ErBCO膜的J（c）值，这表明BSO纳米棒的作用更为有效。 ErBCO电影中的固定中心。在3 T的磁场（B // c）中，BSO为4.9 mol％的ErBCO膜的极高J（c）为0.41 MA / cm（2）。我们得出结论，不仅钉扎材料的决定但是，优化超导膜的结晶度，超导膜的Tc和将钉扎材料掺杂到超导膜中的三个因素的优化对于在磁场中实现更高的J（c）也很重要。

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