Abstract
Towards high-current wire application of high-temperature superconductors, YBa2Cu3O7-δ (YBCO) thick films are grown by means of a liquid-phase epitaxy (LPE) process on a (001) surface of NiO single crystal and laser-sputtered NiO buffer layer deposited on a (001) surface of SrTiO3 single crystal. NiO buffer layers can be rapidly formed on textured Ni tape by the recently developed "Surface-Oxidation-Epitaxy" (SOE) technique which is expected to be a low-cost production method of long metal substrates with highly-textured oxide buffer layer. LPE growth on SOE-buffered textured Ni tapes are also attempted. Moreover, we successfully prepared ∼0.1 m-long LPE-YBCO tapes on {120}<21̄0> Ag-0.1 wt.% Cu alloy tape by using a specially designed LPE furnace equipped with a "reel-to-reel" attachment. BaF2-added BaO-CuO flux is used in this work, in which the growth temperature of YBCO is drastically lowered from usually used value of ∼1000°C down to 900-930°C. While current transport performances of these LPE-YBCO films are still insufficient for high-current wire application, the present results show the high potential of this LPE process for long-length coated-conductor production.
Original language | English |
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Pages (from-to) | 2931-2934 |
Number of pages | 4 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 11 |
Issue number | 1 III |
DOIs | |
Publication status | Published - Mar 2001 |
Externally published | Yes |
Event | 2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: Sep 17 2000 → Sep 22 2000 |
Keywords
- Biaxial texture
- Coated conductor
- Liquid-phase epitaxy
- Metal substrate
- Reel-to-reel system
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering