Thick secondary phase pinning-enhanced YBCO films on technical templates

Sieger M, Pahlke P, Lao M, Meledin A, Eisterer M, Van Tendeloo G, Schultz L, Nielsch K, Huehne R (2018)

Publication Type: Journal article

Publication year: 2018

Journal

IEEE Transactions on Applied Superconductivity Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 28

Article Number: 8000505

Journal Issue: 4

DOI: 10.1109/TASC.2018.2799419

Abstract

The critical current Ic(B) of YBa2Cu3O7δ (YBCO) coated conductors can be increased by growing thicker superconductor layers as well as improving the critical current density Jc(B) by the incorporation of artificial pinning centers. We studied the properties of pulsed laser deposited BaHfO3 (BHO)-doped YBCO films with thicknesses of up to 5 μm on buffered rolling-assisted biaxially textured Ni-5 at% W tape and alternating beam assisted deposition textured Yttrium-stabilized ZrO2 layers on stainless steel. X-Ray diffraction confirms the epitaxial growth of the superconductor on the buffered metallic template. BHO additions reduce the film porosity and lower the probability to grow misoriented grains, hence preventing the Jc decrease observed in undoped YBCO films with thicknesses >2 μm. Thereby, a continuous increase in Ic at 77 K is achieved. A mixed structure of secondary phase nanorods and platelets with different orientations increases Jc(B) in the full angular range and simultaneously lowers the Jc anisotropy compared to pristine YBCO.

Involved external institutions

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden

Germany (DE) Technische Universität Wien / Vienna University of Technology

Austria (AT) University of Antwerp / Universiteit Antwerpen

Belgium (BE)

How to cite

APA:

Sieger, M., Pahlke, P., Lao, M., Meledin, A., Eisterer, M., Van Tendeloo, G.,... Huehne, R. (2018). Thick secondary phase pinning-enhanced YBCO films on technical templates. IEEE Transactions on Applied Superconductivity, 28(4). https://doi.org/10.1109/TASC.2018.2799419

MLA:

Sieger, Max, et al. "Thick secondary phase pinning-enhanced YBCO films on technical templates." IEEE Transactions on Applied Superconductivity 28.4 (2018).

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