Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication
arXiv:1412.3065 · doi:10.1088/0953-2048/28/4/045018
Abstract
We report on the optimization of synthesis of iron-selenide (non-arsenic) superconducting powders that are based on '122' composition, with optimal Tc = 38 K and Jc = 10^5 A/cm2 (4 K). We also report on the wire proof-of concept for these materials, by producing ~ 40 ft of wire that produce Ic. The 122 selenides are more difficult to synthesize and have more complex crystal structures compared to '11' selenides (FeSe and FeSe1-xTex), but they do offer higher Tc and might provoke a natural extension for 11 work.
arXiv comment13 pages, 7 figures; Submitted to SuST
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