Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8164772 | Physica C: Superconductivity and its Applications | 2013 | 4 Pages |
Abstract
Well-textured metal-organic-deposited (MOD) Lanthanum Zirconate (La2Zr2O7, LZO) films were spin-coated on biaxially textured Ni-5 at.%W substrates for low cost production of YBa2Cu3O7âδ (YBCO) coated conductors. Control of the crystallographic orientation of LZO buffers is of significance to achieve YBCO films with high current carrying capability by means of the selective MOD-seed layer and annealing conditions. X-ray diffraction analysis indicated that the three-layer LZO films on MOD-seed layer, especially MOD-CeO2, showed a significant improvement in out-of-plane and in-plane textures. The surface analysis revealed a typical dense, cracks-free, and homogenous morphology. 500 nm-thick YBCO films epitaxially grown on three-layer LZO buffer layers without seed layer, on seed MOD-Y2O3 and MOD-CeO2 by direct-current sputtering, yielded critical current density (Jc) at 77 K of 0.6 MA/cm2, 1.2 MA/cm2 and 1.4 MA/cm2, respectively, exhibiting that the superconducting properties were governed by the crystallographic texture of the underlying buffer layer.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Jie Xiong, Xibin Wang, Pei Guo, Yudong Xia, Xiaohui Zhao, Bowan Tao, Yanrong Li,