Improved YBCO coated conductors using alternate buffer architectures

M. Parans Paranthaman, S. Sathyamurthy, M. S. Bhuiyan, A. Goyal, T. Kodenkandath, X. Li, W. Zhang, C. L.H. Thieme, U. Schoop, D. T. Verebelyi, M. W. Rupich

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The Rolling-Assisted Biaxially Textured Substrates (RABiTS) process has been identified as one of the leading candidates for the fabrication of high performance YBa2Cu3O7-δ (YBCO) coated conductors. The RABiTS process uses standard thermomechanical processing to obtain long lengths of flexible, biaxially oriented substrates with smooth surfaces. The strong biaxial texture of the metal is then transferred to the superconductor by the deposition of intermediate oxide buffers that serve both as a chemical and structural buffer. The typical three-layer RABiTS architecture consists of an e-beam Y2 O3 seed, sputtered YSZ barrier and a sputtered CeO2 cap layer. Chemical solution deposition of buffer layers offers potential cost advantage relative to physical vapor deposition (PVD) processes. Our main goal of this study is to develop simplified buffer architectures and demonstrate high Jc Metal-Organic Deposition (MOD)-YBCO films on all-MOD buffers. La2Zr 2O7 (LZO)/CeO2 buffers have been identified as potential candidates for this study. MOD-YBCO films with a critical current, Ic of 212 A/cm have been achieved on MOD-LZO seeds with sputtered YSZ and CeO2 cap layers. In addition, MOD-YBCO films with a critical current, Ic of 140 A/cm have been achieved on all MOD buffers of LZO/CeO2 for the first time. This offers a potential toward fabrication of lower cost YBCO coated conductors.

Original languageEnglish
Pages (from-to)2632-2634
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART III
DOIs
StatePublished - Jun 2005

Funding

Manuscript received October 5, 2004. This work was supported by the United States Department of Energy, Office of Science, Division of Materials Sciences, Office of Electric Transmission and Distribution-Superconductivity Program. This research was performed at the Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S.DOE under Contract DE-AC05-00OR22725.

FundersFunder number
Division of Materials Sciences
LLC
Office of Electric Transmission and Distribution-Superconductivity Program
U.S.DOEDE-AC05-00OR22725
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory
UT-Battelle

    Keywords

    • Cerium oxide buffer
    • Chemical solution deposition
    • Lanthanum zirconium oxide buffer
    • MOD-YBCO
    • RABiTS
    • YBCO coated conductors

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