Long-length Y-Ba-Cu-O coated conductors produced by surface-oxidation epitaxy method

Author

Matsumoto, Kaname ; Watanabe, Tomonori ; Tanigawa, Toru ; Maeda, Toshihiko ; Kim, SeokBeom ; Hirabayashi, Izumi

Author_Institution

Furukawa Electr. Co. Ltd., Japan

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3138

Lastpage

3141

Abstract

A 50-m long, biaxially textured NiO buffer layer for epitaxial growth of YBa₂Cu₃O_7-δ(YBCO) film has been fabricated on a long length cube-textured Ni tape using the surface-oxidation epitaxy (SOE) technique. The thickness of NiO layer was arranged to be around 3 μm. The tape manufacturing speed was 15 m/h, The SOE-NiO layer was highly (100) oriented and the full width at half maximum from the X-ray φ-scan for NiO(111) was varied from 13 to 19 degrees in the whole length. J_c values exceeding 0.3 MA/cm² at 77 K and self field have been obtained in short samples of YBCO films on NiO/Ni tapes, by using a thin MgO cap layer with the thickness of about 100 nm. Crystal orientation control of YBCO coated conductors by the SOE method is very effective even for the long length Ni tapes

Keywords

barium compounds; critical current density (superconductivity); crystal orientation; epitaxial growth; high-temperature superconductors; oxidation; substrates; superconducting tapes; superconducting thin films; surface texture; texture; yttrium compounds; 3 mum; 50 m; J_c value; MgO; Ni; NiO; NiO(111); NiO/Ni tapes; SOE method; X-ray φ-scan; YBa₂Cu₃O_7-δ; YBa₂Cu₃O₇; biaxially textured buffer layer; crystal orientation; cube-textured tape; highly (100) oriented layer; layer thickness; long-length coated conductors; surface-oxidation epitaxy; tape manufacturing speed; thin MgO cap layer; Conductive films; Conductors; Epitaxial growth; Laboratories; Nickel; Oxidation; Position control; Superconductivity; Surface texture; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919728

Filename

919728