Effects of metal buffer layer on the epitaxial growth of YBa{sub 2}Cu{sub 3}O{sub 7{minus}y} superconducting films by dipping-pyrolysis process
- National Inst. of Materials and Chemical Research, Tsukuba, Ibaraki (Japan)
Superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}y} (YBCO) films were prepared by dipping-pyrolysis process on SrTiO{sub 3} (001) or on MgO (001) substrates covered with a metal (Au or Ag) buffer layer, and the effects of these metal layers on the growth of YBCO films were investigated. Epitaxial growth of YBCO was found to be suppressed by the Au buffer layer, which crystallized to exhibit (111) orientation, after heat treatment at 700 C and higher. On the other hand, epitaxial YBCO films were obtained starting with Ag buffer layer by heat treatment at 700 C and higher, after which most of Ag was accumulated to particles. It was also found that the annealing temperature required for the epitaxial growth of YBCO films on MgO was lowered to 850 C by adopting the Ag buffer layer.
- OSTI ID:
- 392185
- Report Number(s):
- CONF-951155--; ISBN 1-55899-304-5
- Country of Publication:
- United States
- Language:
- English
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