Superconducting Properties in SmBa2Cu3Oy Films With High Density of BaHfO3 Nanorods Fabricated With a Seed Layer
Superconducting Properties in SmBa2Cu3Oy Films With High Density of BaHfO3 Nanorods Fabricated With a Seed Layer
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种子层制备的高密度 BaHfO3 纳米棒 SmBa2Cu3Oy 薄膜的超导性能
DOI：
10.1109/tasc.2015.2389035
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
S. Awaji
中科院分区：
文献类型：
--
作者：
S. Miura;Y. Yoshida;Y. Ichino;A. Tsuruta;K. Matsumoto;A. Ichinose;S. Awaji
在REBa 2Cu 3 Oy（REBCO）膜内的高密度BaMO 3（BMO）纳米棒可以通过BMO的重掺杂产生。这在提高高磁场中的超导性能方面非常有效。然而，重掺杂导致显著的Tcreduction。将高密度的BMO纳米棒引入REBCO薄膜中，而不需要降低Tcis。为此，我们沉积SmBa 2Cu 3 Oy（SmBCO）薄膜与各种量的BaHfO 3（BHO）通过脉冲激光沉积（PLD）方法，使用种子层技术和低温生长（LTG）技术。使用这种技术，我们可以制造一个纯粹的c轴取向的SmBCO薄膜，即使在低衬底温度Ts。在750 °C的低温下制备了含BHO的SmBCO薄膜，没有重掺杂BHO。其结果是，BHO纳米棒变得更薄，密度比那些在SmBCO薄膜中制造的常规PLD方法在高Ts。薄膜的最大密度为4780/μm2，Bφ达到9.9 T。这些样品显示出高Tc（> 90 K）。因此，我们已经成功地制造了高TcSmBCO薄膜与高密度的BHO纳米棒使用LTG技术。
A high density of BaMO3(BMO) nanorods within a REBa2Cu3Oy(REBCO) film can be generated by heavy doping of the BMO. This is very effective in improving superconducting properties in high magnetic fields. However, heavy doping causes a significant Tcreduction. Introduction of a high density of BMO nanorods into REBCO films without reduction in Tcis required. To this end, we deposited SmBa2Cu3Oy(SmBCO) films with various amount of BaHfO3(BHO) by a pulsed laser deposition (PLD) method using a seed-layer technique and a low-temperature growth (LTG) technique. Using this technique, we can fabricate a purely c-axis-oriented SmBCO film even at low substrate temperatures Ts. The SmBCO films with BHO were fabricated at low Tsof 750 °C without heavy doping of BHO. As a result, the BHO nanorods became thinner and denser than those within SmBCO films fabricated by conventional PLD methods at high Ts. The maximum density was 4780/μm2, and the Bφof the film reached 9.9 T. These samples showed high Tc(> 90 K). We have therefore successfully fabricated high-TcSmBCO films with high densities of BHO nanorods using the LTG technique.