Superconducting and microstructural properties of [001] tilt YBa sub(2)Cu sub(3)O sub(7-&#x 03B4; ) thick film grain boundaries on SrTiO sub(3) bicrystal substrates

Superconducting and microstructural properties of [001] tilt YBa sub(2)Cu sub(3)O sub(7-&#x 03B4; ) thick film grain boundaries on SrTiO sub(3) bicrystal substrates

We present a study of superconducting and microstructural properties of [001] tilt YBa sub(2)Cu sub(3)O sub(7- delta ) (YBCO) thick film grain boundaries (GB) on SrTiO sub(3) bicrystal substrates prepared using a BaF sub(2) ex-situ post deposition reaction process. For a 15 degree tilt boundary, mul...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2001-03, Vol.11 (1), p.3876-3879
Hauptverfasser: Li, Qiang, Zhu, Y, Solovyov, V F, Wiesmann, HJ, Suenaga, M
Format: Artikel
Sprache:eng
Schlagworte:
BICRYSTALS
BOUNDARIES
Camber
COPPER OXIDE
CURRENT DENSITY
Grain boundaries
MICRO ORGANISMS
Microorganisms
Microstructure
MICROSTRUCTURES
Strontium titanates
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Thick films
Tilt
YTTRIUM OXIDE
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Zusammenfassung:We present a study of superconducting and microstructural properties of [001] tilt YBa sub(2)Cu sub(3)O sub(7- delta ) (YBCO) thick film grain boundaries (GB) on SrTiO sub(3) bicrystal substrates prepared using a BaF sub(2) ex-situ post deposition reaction process. For a 15 degree tilt boundary, multiple microbridges were patterned across the grain boundary at various locations. A large variation of local critical current density J sub(c ) was observed. Through local microstructural characterization of these GB bridges using transmission electron microscopy (TEM), a direct correlation of local GB J sub(c) with structure is identified.
ISSN:1051-8223
DOI:10.1109/77.919912