Development and Characterization of P-doped Ba-122 Superconducting Tapes

Handle URI:
http://hdl.handle.net/10754/622532
Title:
Development and Characterization of P-doped Ba-122 Superconducting Tapes
Authors:
Contarino, D.; Löhnert, C.; Johrendt, D.; Genovese, Alessandro; Bernini, C.; Malagoli, A.; Putti, M.
Abstract:
Among the recently discovered Fe-based superconducting compounds, the Ba-122 phase has proved to be the more attracting for the development of powder in tube (PIT) processed conductors. In fact, after some years of development, critical current densities (<italic>J<sub>c</sub></italic>) of about 10<sup>5</sup> A/cm<sup>2</sup> at 4.2 K and magnetic fields up to 10 T have been obtained in (Ba<sub>0.6</sub>K<sub>0.4</sub>)Fe<sub>2</sub>As<sub> 2</sub>, PIT wires and tapes. To develop a safe upscaling method, the synthesis of the powders is a crucial point. In order to avoid the use of highly reactive K we have developed BaFe<sub>2</sub>(P<sub>1-x</sub>As<sub>x</sub>)<sub>2 </sub> PIT tapes. This compound has proved to be very stable and in form of crystals and thin films exhibits excellent critical current: We succeeded in manufacturing PIT tapes with this phase with <italic>J<sub>c</sub></italic> values of about 10<sup>3</sup> A/cm<sup>2</sup> at 4.2 K in self-field. Detailed microstructural and chemical investigations of the samples have been performed by high-resolution TEM, scanning TEM, and electron energy loss spectrometry analysis. A deformation network inside the grains that can induce strong pinning has been observed. However, chemical inhomogeneities at the grain boundaries are also present, which limit the transport current.
KAUST Department:
King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Citation:
Contarino D, Lohnert C, Johrendt D, Genovese A, Bernini C, et al. (2017) Development and Characterization of P-doped Ba-122 Superconducting Tapes. IEEE Transactions on Applied Superconductivity 27: 1–4. Available: http://dx.doi.org/10.1109/TASC.2016.2633386.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Applied Superconductivity
Issue Date:
29-Nov-2016
DOI:
10.1109/TASC.2016.2633386
Type:
Article
ISSN:
1051-8223; 1558-2515
Additional Links:
http://ieeexplore.ieee.org/document/7762128/
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorContarino, D.en
dc.contributor.authorLöhnert, C.en
dc.contributor.authorJohrendt, D.en
dc.contributor.authorGenovese, Alessandroen
dc.contributor.authorBernini, C.en
dc.contributor.authorMalagoli, A.en
dc.contributor.authorPutti, M.en
dc.date.accessioned2017-01-02T09:55:28Z-
dc.date.available2017-01-02T09:55:28Z-
dc.date.issued2016-11-29en
dc.identifier.citationContarino D, Lohnert C, Johrendt D, Genovese A, Bernini C, et al. (2017) Development and Characterization of P-doped Ba-122 Superconducting Tapes. IEEE Transactions on Applied Superconductivity 27: 1–4. Available: http://dx.doi.org/10.1109/TASC.2016.2633386.en
dc.identifier.issn1051-8223en
dc.identifier.issn1558-2515en
dc.identifier.doi10.1109/TASC.2016.2633386en
dc.identifier.urihttp://hdl.handle.net/10754/622532-
dc.description.abstractAmong the recently discovered Fe-based superconducting compounds, the Ba-122 phase has proved to be the more attracting for the development of powder in tube (PIT) processed conductors. In fact, after some years of development, critical current densities (<italic>J<sub>c</sub></italic>) of about 10<sup>5</sup> A/cm<sup>2</sup> at 4.2 K and magnetic fields up to 10 T have been obtained in (Ba<sub>0.6</sub>K<sub>0.4</sub>)Fe<sub>2</sub>As<sub> 2</sub>, PIT wires and tapes. To develop a safe upscaling method, the synthesis of the powders is a crucial point. In order to avoid the use of highly reactive K we have developed BaFe<sub>2</sub>(P<sub>1-x</sub>As<sub>x</sub>)<sub>2 </sub> PIT tapes. This compound has proved to be very stable and in form of crystals and thin films exhibits excellent critical current: We succeeded in manufacturing PIT tapes with this phase with <italic>J<sub>c</sub></italic> values of about 10<sup>3</sup> A/cm<sup>2</sup> at 4.2 K in self-field. Detailed microstructural and chemical investigations of the samples have been performed by high-resolution TEM, scanning TEM, and electron energy loss spectrometry analysis. A deformation network inside the grains that can induce strong pinning has been observed. However, chemical inhomogeneities at the grain boundaries are also present, which limit the transport current.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/document/7762128/en
dc.subjectBariumen
dc.subjectCritical current density (superconductivity)en
dc.subjectCrystalsen
dc.subjectLatticesen
dc.subjectPowdersen
dc.subjectStrainen
dc.subjectSuperconducting filmsen
dc.titleDevelopment and Characterization of P-doped Ba-122 Superconducting Tapesen
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology, Thuwal, Saudi Arabiaen
dc.identifier.journalIEEE Transactions on Applied Superconductivityen
dc.contributor.institutionCNR-SPIN, Genova, Italyen
dc.contributor.institutionLudwig-Maximilians-Universität, München, Germanyen
dc.contributor.institutionUniversità di Genova, Genova, Italyen
kaust.authorGenovese, Alessandroen
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