Iron-chalcogenide FeSe(0.5)Te(0.5) Coated Superconducting Tapes for High Field Applications

Journal Article · Fri Jul 01 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3606557· OSTI ID:1040493

Si, W; Johnson, P; Zhou, J; Jie, Q; Dimitrov, I; Solovyov, V; Jaroszynski, J; Matias, V; Sheehan, C; Li, Q

The high upper critical field characteristic of the recently discovered iron-based superconducting chalcogenides opens the possibility of developing a new type of non-oxide high-field superconducting wires. In this work, we utilize a buffered metal template on which we grow a textured FeSe{sub 0.5}Te{sub 0.5} layer, an approach developed originally for high temperature superconducting coated conductors. These tapes carry high critical current densities (> 1 x 10{sup 4} A/cm{sup 2}) at about 4.2 K under magnetic field as high as 25 T, which are nearly isotropic to the field direction. This demonstrates a very promising future for iron chalcogenides for high field applications at liquid helium temperatures. Flux pinning force analysis indicates a point defect pinning mechanism, creating prospects for a straightforward approach to conductor optimization.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1040493
• Report Number(s): BNL-96243-2011-JA; APPLAB; R&D Project: PO-016; KC0202020; TRN: US1202468
• Journal Information: Applied Physics Letters, Vol. 98, Issue 26; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CRITICAL CURRENT
CRITICAL FIELD
HELIUM
IRON
MAGNETIC FIELDS
MAGNETIC FLUX
OPTIMIZATION
POINT DEFECTS
SUPERCONDUCTING WIRES
pulsed laser deposition
pinning force analysis
high field applications
iron based superconducting chalcogenides