Title :
Growth of Biaxially Oriented Conductive ITO Buffer Layers on Textured Ni Tapes for YBCO Coated Conductors
Author :
Nosaki, Shuya ; Doi, Toshiya ; Kawahara, Kazuhiro ; Taneda, Takahiro ; Hakuraku, Yoshinori ; Shima, Kunihiro ; Hoshino, Hirofumi ; Kashima, Naoji ; Nagaya, Shigeo
Author_Institution :
Kagoshima Univ., Kagoshima
fDate :
6/1/2007 12:00:00 AM
Abstract :
We investigated the effect of the Ar+ ion beam irradiation on removing NiO on the {100} (001) textured Ni tape surface, and the validity of the ITO as a conductive buffer layer. Excellent biaxial crystal orientations of the CeO2, YSZ and YBCO were achieved in the YBCO/YSZ/CeO2 prepared on the {100}(001) textured Ni tape, by irradiating the surface of the Ni tape before starting the deposition. The Jc of the YBCO/YSZ/CeO2/Ni tape exceeded 2 MA/cm2 at 77 K. We also prepared the biaxially oriented YBCO on the ITO buffered Ni tape. We confirmed that ITO did not react with YBCO, and that ITO aligned biaxially on the {100} (001) textured Ni tape.
Keywords :
barium compounds; buffer layers; cerium compounds; critical current density (superconductivity); crystal orientation; high-temperature superconductors; indium compounds; ion beam effects; nickel; superconducting tapes; texture; tin compounds; yttrium compounds; zirconium compounds; Ar+ ion beam irradiation; ITO; Ni surface; YBCO coated conductors; YBa2Cu3O7-ZrO2-Y2O3-CeO2-Ni interface; biaxially crystal oriented conductive buffer layers; high critical current density conductor; high temperature superconductors; textured tape surface; Argon; Atmosphere; Buffer layers; Conductors; Indium tin oxide; Ion beams; Rough surfaces; Surface roughness; Surface texture; Yttrium barium copper oxide; ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$; Biaxial orientation; ITO; high-temperature superconductors; textured;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.898182
