Oxide buffer layer with perovskite structure for YBa/sub 2/Cu/sub 3/O/sub 7-x/ coated conductors prepared by metal-organic deposition method
Oxide buffer layer with perovskite structure for YBa/sub 2/Cu/sub 3/O/sub 7-x/ coated conductors prepared by metal-organic deposition method
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DOI：
10.1109/tasc.2003.811845
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发表时间：
2003-07
影响因子：
1.8
通讯作者：
A. Takechi;K. Matsumoto;K. Osamura
中科院分区：
文献类型：
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作者：
A. Takechi;K. Matsumoto;K. Osamura
为了在金属衬底上制备高临界电流密度（J/sub c/）的YBa/sub 2/Cu/sub 3/O/sub 7-x/（YBCO）涂层导体，氧化物缓冲层的沉积是非常重要的。具有钙钛矿结构的BaZrO/sub 3/（BZO）和BaSnO/sub 3/（BSO）与YBCO具有优异的化学相容性，并且与氧化物衬底（包括通过表面氧化外延工艺形成的NiO缓冲层）具有良好的晶格匹配。采用金属有机物沉积（MOD）法在SrTiO/sub 3/单晶衬底上制备了BZO或BSO缓冲层，研究了缓冲层对YBCO薄膜超导性能的影响。在BZO衬底上用脉冲激光沉积法制备的YBCO薄膜的J/sub c/达到0.2 9 MA/cm/sup 2/（77 K，0 T）。
For fabricating YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) coated conductors on metal substrates with high critical current density (J/sub c/), deposition of oxide buffer layers is very important. BaZrO/sub 3/ (BZO) and BaSnO/sub 3/ (BSO) with a perovskite structure have excellent chemical compatibility with YBCO and good lattice matching with oxide substrates, including NiO buffer by surface oxidation epitaxy process. We have fabricated BZO or BSO buffer layers on SrTiO/sub 3/ single-crystal substrates by metal-organic deposition (MOD) method, in order to investigate the effects of buffer layers on superconducting properties of YBCO films. J/sub c/ of YBCO films deposited by pulsed laser deposition on BZO reached 0.29 MA/cm/sup 2/ (77 K, 0 T).