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Growth Conditions of $SrTiO_3 $ Film on Textured Metal Substrate for $YBa_2CU_3O_{7-\delta}$ Coated Conductor  

Chung, J.K. (Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute)
Ko, R.K. (Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute)
Song, K.J. (Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute)
Park, C. (Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute)
Kim, C.J. (Division of Materials Science & Engineering, Gyeongsang National Univ.)
Abstract
SrTiO₃ (STO) thin fims were deposited on the biaxially textured Ni-3 wt%W alloy substrates to be used as a single buffer layer for YBa₂CU₃O/sub 7-8/(YBCO) coated conductor. Thin films of YBCO and STO were deposited using pulsed laser. The deposition condition for epitaxial growth of STO on the textured metal was identified, and YBCO coated conductor with a single STO buffer layer with critical current density of 1.2 MA㎠ at 77 K under zero magnetic field and critical temperature of 86 K, was fabricated.
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