物理学报Issue(13)：1-6,6.DOI:10.7498/aps.62.137401
掺杂 Y2O3和 BaCeO3提高MOD-YBCO 超导性能的研究*
Enhanced flux pinning in MOD-YBCO films with co-doping of BaCeO3 and Y2O3 nanoparitcles∗
摘要
Abstract
Enhancing the critical-current density of YBCO films is essential to gain a deeper understanding of the vortex pinning mecha-nisms and enable commercial applications of high-temperature superconductivity. Combined BaCeO3 and Y2O3 nanoparticles have been achieved to be co-doped in YBa2Cu3O7−x (YBCO) films by metalorganic deposition using trifluoroacetates (TFA-MOD). The formation of integrated nanoparticles increases the critical current density (Jc) of Y2O3/BaCeO3 doped-YBCO films while keeping the critical transition temperature (Tc) close to that in the pure YBCO films. YBCO film containing BaCeO3 and Y2O3 showed Tc value of 91 K and Jc value of 5 MA/cm2 at self-field (0 T, 77 K). The strongly enhanced flux pinning over a wide range of magnetic field may be attributed to the combined BaCeO3 and Y2O3 created by optimized TFA-MOD conditions.关键词
钇钡铜氧薄膜/纳米 Y2O3 和纳米 BaCeO3/磁通钉扎/三氟乙酸盐-金属有机沉积Key words
YBCO films/BaCeO3/Y2O3doping/flux pinning/TFA-MOD引用本文复制引用
..掺杂 Y2O3和 BaCeO3提高MOD-YBCO 超导性能的研究*[J].物理学报,2013,(13):1-6,6.基金项目
国家重点基础研究发展计划(批准号:2011CBA00105)、国家自然科学基金(批准号:51002149,51272250)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2011CBA00105), and the National Natural Science Foundation of China (Grant Nos.51002149,51272250) （批准号:2011CBA00105）
