Title :
Textured La2Zr2O7, Gd2O 3, and Er2O3 buffer layers for a long-length YBCO coated conductor by non-vacuum process
Author :
Celik, E. ; Okuyucu, H. ; Mutli, I.H. ; Tomsic, M. ; Schwartz, J. ; Hascicek, Y.S.
Author_Institution :
Nat. High Magnetic Field Lab., Florida State Univ., Tallahassee, FL, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
Textured La2Zr2O7, Gd2O3, and Er2O3 were studied as buffer layer materials for long length YBCO coated conductors. Buffer layers were grown on Ni tapes using La, Zr, Gd, and Er organometallic compounds which were dissolved into solvents to obtain smooth films via a non-vacuum, reel-to-reel sol-gel process. Films were annealed at 900°C-1200°C under a flowing 4%H2-Ar gas mixture. The buffer layers were characterized by ESEM, EDS, XRD, and DTA. It was found that textured, continuous, crack- and pinhole-free La 2Zr2O7, Gd2O3, and Er2O3 buffer layers were obtained
Keywords :
X-ray diffraction; annealing; barium compounds; differential thermal analysis; erbium compounds; gadolinium compounds; high-temperature superconductors; lanthanum compounds; nickel; scanning electron microscopy; sol-gel processing; substrates; superconducting tapes; yttrium compounds; 900 to 1200 C; Ar; DTA; EDS; ESEM; Er2O3; Er2O3 buffer layers; Gd2O3; H2; La2Zr2O7; Ni; Ni tapes; XRD; YBa2Cu3O7; annealing; flowing H2-Ar gas mixture; long-length YBCO coated conductors; nonvacuum process; nonvacuum reel-to-reel sol-gel process; organometallic compounds; smooth films; solvents; textured La2Zr2O7; textured continuous crack/pinhole-free buffer layers; Buffer layers; Erbium; High temperature superconductors; Laboratories; Lattices; Magnetic fields; Substrates; Telephony; Yttrium barium copper oxide; Zirconium;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
