Title :
Preparation of double-sided CeO2 buffer layers on MgO substrates for YBa2Cu3O7-x films
Author :
Taki, K. ; Araki, T. ; Yamashita, D. ; Hirabayashi, I. ; Enomoto, Y. ; Suzuki, K.
Author_Institution :
Supercond. Res. Lab., ISTEC, Tokyo, Japan
fDate :
6/1/2003 12:00:00 AM
Abstract :
Double-sided CeO2 buffer layers were fabricated by pulsed-laser deposition on 20 mm × 20 mm MgO[100] substrates to apply YBCO films using the TFA-MOD (trifluoroacetate-metalorganic deposition) process for microwave devices. The double-sided CeO2 films had the characteristics of a smooth surface (Rms < 1 nm) and a highly [100] aligned orientation, which is almost independent of thickness. We successfully obtained a YBCO film deposited by the TFA-MOD process on CeO2/MgO[100], which had a critical current density (Jc) of 6 MA/cm2 (77 K, 0 T) with good reproducibility.
Keywords :
barium compounds; cerium compounds; critical current density (superconductivity); high-temperature superconductors; magnesium compounds; pulsed laser deposition; superconducting thin films; yttrium compounds; 20 mm; 77 K; CeO2; MgO; MgO substrates; TFA-MOD process; YBCO films; YBa2Cu3O7-x; YBa2Cu3O7-x films; critical current density; double-sided CeO2 buffer layers; highly [100] aligned orientation; microwave devices; preparation; pulsed-laser deposition; smooth surface; thermal expansion; trifluoroacetate-metalorganic deposition; Buffer layers; Coatings; Electromagnetic heating; Reproducibility of results; Substrates; Superconducting epitaxial layers; Superconducting films; Superconducting microwave devices; Superconductivity; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.811957
