Highly textured oxypnictide superconducting thin films on metal substrates

Journal Article · Mon Oct 27 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4900931· OSTI ID:22310664

Iida, Kazumasa; Kurth, Fritz; Grinenko, Vadim; Hänisch, Jens ^[1]; Chihara, Masashi; Sumiya, Naoki; Hatano, Takafumi; Ikuta, Hiroshi ^[2]; Ichinose, Ataru; Tsukada, Ichiro ^[3]; Matias, Vladimir ^[4]; Holzapfel, Bernhard ^[5]

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1. Institute for Metallic Materials, IFW Dresden, D-01171 Dresden (Germany)
2. Department of Crystalline Materials Science, Nagoya University, Chikusa, Nagoya 464-8603 (Japan)
3. Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196 (Japan)
4. iBeam Materials, Inc., 2778A Agua Fria Street, Santa Fe, New Mexico 87507 (United States)
5. Institute for Technical Physics, Karlsruhe Institute of Technology, Hermann von Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany)

Highly textured NdFeAs(O,F) thin films have been grown on ion beam assisted deposition-MgO/Y{sub 2}O{sub 3}/Hastelloy substrates by molecular beam epitaxy. The oxypnictide coated conductors showed a superconducting transition temperature (T{sub c}) of 43 K with a self-field critical current density (J{sub c}) of 7.0×10{sup 4} A/cm{sup 2} at 5 K, more than 20 times higher than powder-in-tube processed SmFeAs(O,F) wires. Albeit higher T{sub c} as well as better crystalline quality than Co-doped BaFe{sub 2}As{sub 2} coated conductors, in-field J{sub c} of NdFeAs(O,F) was lower than that of Co-doped BaFe{sub 2}As{sub 2}. These results suggest that grain boundaries in oxypnictides reduce J{sub c} significantly compared to that in Co-doped BaFe{sub 2}As{sub 2} and, hence biaxial texture is necessary for high J{sub c.}.

• OSTI ID: 22310664
• Journal Information: Applied Physics Letters, Vol. 105, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARSENIC COMPOUNDS
BEAMS
CRITICAL CURRENT
CURRENT DENSITY
DEPOSITION
DOPED MATERIALS
GRAIN BOUNDARIES
IRON COMPOUNDS
MAGNESIUM OXIDES
METALS
MOLECULAR BEAM EPITAXY
NEODYMIUM COMPOUNDS
POWDERS
SUBSTRATES
TEXTURE
THIN FILMS
TRANSITION TEMPERATURE
YTTRIUM OXIDES