Polycrystalline MgB sub(2) Films on Flexible YSZ Substrates Grown by Hybrid Physical-Chemical Vapor Deposition

We report properties of polycrystalline MgB sub(2) films deposited on thin flexible yttium-stabilized zirconia (YSZ) substrates by hybrid physical-chemical vapor deposition. The MgB sub(2) films show a transition temperature of 38.9 K with a narrow superconducting transition (0.1 K). The self-field...

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Published inIEEE transactions on applied superconductivity Vol. 17; no. 2
Main Authors Pogrebnyakov, A V, Maertz, E, Wilke, RHT, Li, Qi, Soukiassian, A, Schlom, D G, Redwing, J M, Findikoglu, A, Xi, X X
Format Journal Article
LanguageEnglish
Published 01.01.2007
Subjects
Borides
Conductors (devices)
Digital circuits
Magnesium compounds
Superconductivity
Vapor deposition
Yttria stabilized zirconia
Zirconium dioxide
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Summary:We report properties of polycrystalline MgB sub(2) films deposited on thin flexible yttium-stabilized zirconia (YSZ) substrates by hybrid physical-chemical vapor deposition. The MgB sub(2) films show a transition temperature of 38.9 K with a narrow superconducting transition (0.1 K). The self-field critical current density in the films reaches 10 super(7) A/cm super(2) at low temperatures. These properties do not change after repeated bending over a radius of 10 mm. Low microwave surface resistance comparable to those obtained in epitaxial MgB sub(2) films on single-crystalline sapphire substrate was observed. The result shows promise of polycrystalline MgB sub(2) films for applications in superconducting digital circuits as well as in coated conductor wires.
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ISSN:1051-8223
DOI:10.1109/TASC.2007.897981