Manipulation of YBCO film properties by the introduction of perovskite BaTiO3 nanodots as substrate decorations
Manipulation of YBCO film properties by the introduction of perovskite BaTiO3 nanodots as substrate decorations
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DOI：
10.1016/j.jeurceramsoc.2016.05.031
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发表时间：
2016-11-01
影响因子：
5.7
通讯作者：
You, Caiying
中科院分区：
文献类型：
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作者：
Bian, Weibai;Chen, Yuanqing;You, Caiying
采用不同浓度的BTO前驱体溶液在LaAlO3 （LAO）衬底上沉积了钙钛矿BaTiO3 （BTO）纳米点。随后，通过低氟溶液法在bto点装饰的LAO衬底上沉积了YBa2Cu3O7-x （YBCO）超导薄膜。用0.025 mol/L的溶液制备高BTO纳米点（高度30 ~ 50 nm）和短BTO纳米点（高度小于30 nm），其他浓度的溶液不能制备。我们发现，沉积在bto点装饰的LAO衬底上的YBCO薄膜的通量钳制力显著增强。由于高BTO点和短BTO点的联合钉扎效应，在LAO衬底上制备了临界电流密度为8.42 MA/cm(2)、磁通钉扎力为9.58 GN/m(3)的高性能YBCO薄膜。(C) 2016 Elsevier Ltd.版权所有。
Perovskite BaTiO3 (BTO) nanodots were deposited on LaAlO3 (LAO) substrates using the BTO precursor solutions with various low concentrations. Subsequently, YBa2Cu3O7-x (YBCO) superconducting films were deposited on the BTO-dots decorated LAO substrates through a low-fluorine solution method. High BTO dots (with heights of 30-50 nm) and short BTO nanodots (with heights less than 30 nm) were produced using a solution with a concentration of 0.025 mol/L, which could not be produced using solutions of other concentrations. We found a significantly enhanced flux pining force in the YBCO film deposited on the BTO-dots decorated LAO substrate. Because of the joint pinning effect of the high BTO dots and short BTO dots, the high-performance YBCO film with a critical current density of 8.42 MA/cm(2) and a flux pinning force of 9.58 GN/m(3) was produced on the LAO substrate. (C) 2016 Elsevier Ltd. All rights reserved.