摘要
YBCO thin films with BaTiO 3 nanocolumns were fabricated on (0 0 l) oriented LaAlO 3 substrates by metal-organic deposition (MOD). High critical current density (J c ) up to 10 MA/cm 2 has been observed on these self-assembled BaTiO 3 nanocolumns doped YBCO films at 77 K and self-field. These BaTiO 3 nanocolumns had no preferential orientation and were distributed randomly in the YBCO matrix. And an improved critical current density over a wide range of magnetic field in the BaTiO 3 -YBCO composite films were found, which implies that this unique self-assembled microstructure provided strong vortex pinning in YBCO films.
源语言 | 英语 |
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页(从-至) | 622-627 |
页数 | 6 |
期刊 | Applied Surface Science |
卷 | 314 |
DOI | |
出版状态 | 已出版 - 30 9月 2014 |
已对外发布 | 是 |