Title :
LaMnO3: a single oxide buffer layer for high-Jc YBa2Cu3O7-δ coated conductors
Author :
Aytug, T. ; Paranthaman, M. ; Kang, S. ; Zhai, H.Y. ; Leonard, K.J. ; Vallet, C.E. ; Sathyamurthy, S. ; Christen, H.M. ; Goyal, A. ; Christen, D.K.
Author_Institution :
Oak Ridge Nat. Lab., Oak Ridge, TN, USA
fDate :
6/1/2003 12:00:00 AM
Abstract :
Single buffer layer of LaMnO3 (LMO) has been epitaxially grown on biaxially textured Ni and Ni-alloy substrates by sputter deposition. The property characterizations revealed that LMO buffers can serve both as a chemical as well as a structural buffer for YBa2Cu3O7-δ (YBCO) films. Epitaxial YBCO films grown on LMO buffers using pulsed laser deposition (PLD) have self-field critical current densities (Jc) exceeding 1 × 106 A/cm2 at 77 K. The present results have demonstrated the strong prospect of LMO for the practical development of YBCO coated conductors.
Keywords :
barium compounds; critical current density (superconductivity); high-temperature superconductors; lanthanum alloys; nickel; nickel alloys; pulsed laser deposition; sputtered coatings; superconducting epitaxial layers; superconducting tapes; surface texture; yttrium compounds; 77 K; LaMnO3; Ni; YBa2Cu3O7-δ; YBa2Cu3O7-δ coated conductors; biaxially textured Ni; biaxially textured Ni-alloy substrates; high temperature superconductor; pulsed laser deposition; self-field critical current densities; single oxide buffer layer; sputter deposition; Buffer layers; Chemicals; Conductive films; Conductors; Critical current density; High temperature superconductors; Pulsed laser deposition; Sputtering; Substrates; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.811942
