A comparison of buffer layer architectures on continuously processed YBCO coated conductors based on the IBAD YSZ process

Author

Holesinger, Terry G. ; Foltyn, Stephen R. ; Arendt, Paul N. ; Jia, Quanxi ; Dowden, Paul C. ; DePaula, Raymond F. ; Groves, James R.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3359

Lastpage

3364

Abstract

The microstructures of continuously processed YBa₂Cu ₃O_y (YBCO) coated conductors processed with three different architectures are presented. YBCO films were deposited directly on ion-beam-assisted deposition (IBAD) yttria-stabilized zirconia (YSZ) or on intervening layers of Y₂O₃ or CeO₂. Different interfacial reactions were observed in each case. The volume changes that occur with the interfacial reactions were calculated based on the identified reaction products. The calculated volume changes correlate with the observed microstructures and appear to be an important factor in determining an optimal buffer layer system. The interfacial reactions do not preclude the attainment of high I_c and J_c values in these coated conductors

Keywords

barium compounds; crystal microstructure; high-temperature superconductors; ion beam assisted deposition; superconducting thin films; yttrium compounds; zirconium compounds; CeO₂; HTSC; IBAD YSZ process; Y₂O₃; Y₂O₃ZrO₂; YBa₂Cu₃O; YBa₂Cu₃O_y; buffer layer architectures; continuously processed YBaCuO coated conductors; interfacial reactions; ion-beam-assisted deposition; microstructures; reaction products; volume changes; yttria-stabilized zirconia; Buffer layers; Conducting materials; Conductors; Lattices; Microstructure; Optical pulses; Pulsed laser deposition; Substrates; Superconducting films; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919783

Filename

919783