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Superconducting properties of FeSe wires and tapes prepared by gas diffusion technique

By Zhaoshun Gao, Yanpeng Qi, Lei Wang, Dongliang Wang, Xianping Zhang, Chao Yao and Yanwei Ma

Abstract

Superconducting FeSe in the form of wires and tapes were successfully fabricated using a novel gas diffusion procedure. Structural analysis by mean of x-ray diffraction shows that themain phase of tetragonal PbO-type FeSe was obtained by this synthesis method. The zero resistivity transition temperature of the FeSe was confirmed to be 9.3 K. The critical current density as high as 137 A/cm^2 (4 K, self field) has been observed. The results suggest that the diffusion procedure is promising in preparing high-quality FeSe wires and tapes.Comment: 13 pages, 6 figures, Supercond. Sci. Technol. accepte

Topics: Condensed Matter - Superconductivity
Year: 2011
DOI identifier: 10.1088/0953-2048/24/6/065022
OAI identifier: oai:arXiv.org:1103.5304
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