Detailed investigations on La2Zr2O7 buffer layers for YBCO-coated conductors prepared by chemical solution deposition
Detailed investigations on La2Zr2O7 buffer layers for YBCO-coated conductors prepared by chemical solution deposition
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DOI：
10.1016/j.actamat.2006.08.040
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发表时间：
2007
期刊：
影响因子：
9.4
通讯作者：
K. Knoth;R. Hühne;S. Oswald;L. Schultz;B. Holzapfel
中科院分区：
文献类型：
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作者：
K. Knoth;R. Hühne;S. Oswald;L. Schultz;B. Holzapfel
对通过化学溶液沉积在 Ni-5 at.%W 滚压辅助双轴织构基底上制备的 La{sub 2}Zr{sub 2}O{sub 7} (LZO) 缓冲层的生长和性能进行了广泛的研究，目前这对于制备 YBa{sub 2}Cu{sub 3}O{sub 7-x} 涂层导体非常有意义。主要重点是了解前体层的分解、它们的生长和织构形成，以及它们在退火过程中的结构演变，从而产生高度双轴织构的 LZO 缓冲层。因此，应用了各种表征方法，包括光谱分析技术、X射线衍射技术和其他技术。可重复地获得了高性能的外延生长的 LZO 缓冲层，显示出直至表面的强立方织构、低粗糙度的无裂纹表面形态以及对 Ni 从衬底扩散的足够的阻挡功能。
An extensive study of the growth and properties of La{sub 2}Zr{sub 2}O{sub 7} (LZO) buffer layers prepared by chemical solution deposition on Ni-5 at.%W rolling-assisted biaxially textured substrates, which is presently of great interest for the preparation of YBa{sub 2}Cu{sub 3}O{sub 7-x}-coated conductors, is presented. The main focus was on the understanding of the decomposition of the precursor layers, and their growth and texture formation, as well as their structural evolution during annealing, leading to highly biaxially textured LZO buffer layers. Therefore, various characterization methods, including spectroscopic analysis techniques, X-ray diffraction techniques, and other techniques, were applied. Epitaxially grown LZO buffer layers of high performance, showing a strong cube texture up to the surface, a crack-free surface morphology of low roughness, and a sufficient barrier function against Ni diffusion from the substrate, were reproducibly obtained.