Flux pinning in YBa2Cu3O7-δ films by surface modification with SDP-derived amorphous Y2O3 films
A novel simple surface modification route, i.e., solution deposition planarization (SDP), was firstly applied for the enhancement of the flux pinning in superconducting thin films.Solution-derived amorphous Y2O3 films were spin-coated on LaAlO3 (LAO) substrates for sputtered YBa2Cu3O7-δ (YBCO) films.The erystallinity and self-field properties of YBCO with amorphous Y2O3 decoration were improved due to reduced roughness when the concentrations were properly chosen.The dislocation density in the YBCO thin films induced by amorphous Y2O3 was measured and calculated.The relationship between the dislocation density and power-law exponent a was systematically investigated.The surface planarization and defect-induced flux pinning behavior of amorphous Y2O3 films, indicated a promising future for cost-effective coated conductors on practical applications.
surface modification YBa2Cu3O7-δ (YBCO) solution deposition planarization (SDP) flux pinning
Pei Guo Jie Xiong Yaxin Xu Xiaohui Zhao Yuanqing Chen Yudong Xia Xingzhao Liu Bowan Tao
State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Scienc Department of Materials Physics & Chemistry,Xi”an University of Technology,Xi”an 710048,China
国内会议
成都
英文
284-289
2013-11-15（万方平台首次上网日期，不代表论文的发表时间）