Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication

Jonathan E. Mitchell; Daniel A. Hillesheim; Craig A. Bridges; M. Parans Paranthaman; Kris Gofryk; Mike Rindfleisch; Mike Tomsic; Athena S. Sefat

doi:10.1088/0953-2048/28/4/045018

Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication

Superconductivity 2015-06-23 v1 Materials Science

Authors: Jonathan E. Mitchell , Daniel A. Hillesheim , Craig A. Bridges , M. Parans Paranthaman , Kris Gofryk , Mike Rindfleisch , Mike Tomsic , Athena S. Sefat

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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.

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@article{arxiv.1412.3065,
  title  = {Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication},
  author = {Jonathan E. Mitchell and Daniel A. Hillesheim and Craig A. Bridges and M. Parans Paranthaman and Kris Gofryk and Mike Rindfleisch and Mike Tomsic and Athena S. Sefat},
  journal= {arXiv preprint arXiv:1412.3065},
  year   = {2015}
}

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13 pages, 7 figures; Submitted to SuST

Optimization of a Non-arsenic Iron-based Superconductor for Wire Fabrication

Abstract

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