YBa2Cu3O7-x films on flexible, partially stabilized zirconia substrates with fully stabilized zirconia buffer layers

Textured polycrystalline YBCO films with superconducting transition temperatures of ∼90 K have been prepared on flexible zirconia substrates, partially stabilized by 3 mol % yttria. X-ray data suggest undesirable (013) and [(110) (103)] texture in minor amounts within the predominantly c-axis orient...

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Bibliographic Details
Published in:Applied physics letters 1991-09, Vol.59 (13), p.1638-1640
Main Authors: HARSHAVARDHAN, K. S, RAMESH, R, REEVES, M, TKACZYK, J. E, KAY, K. W, RAVI, T. S, SAMPERE, S, INAM, A, CHANG, C. C, HULL, G, RAJESWARI, M, SANDS, T, VENKATESAN, T
Format: Article
Language:English
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Summary:Textured polycrystalline YBCO films with superconducting transition temperatures of ∼90 K have been prepared on flexible zirconia substrates, partially stabilized by 3 mol % yttria. X-ray data suggest undesirable (013) and [(110) (103)] texture in minor amounts within the predominantly c-axis oriented film. The transmission electron microscope data reveal clean, special crystallographic as well as silicon contaminated grain boundaries containing amorphous phases. By depositing a zirconia buffer layer, fully stabilized by 9 mol % yttria, we have demonstrated that the normal-state metallic and superconducting properties of the YBCO films can be considerably improved. These films exhibit critical-current densities of ∼0.9×104 A/cm2 at 77 K in zero field and 2×105 A/cm2 at 4.2 K in zero field.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.106255