High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers
Abstract The fabrication of a Fe-based coated conductor (CC) becomes possible when Fe(Se,Te) is grown as an epitaxial film on a metallic oriented substrate. Thanks to the material’s low structural anisotropy, less strict requirements on the template microstructure allow for the design of a simplifie...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-24044-5 |
| _version_ | 1797952566430007296 |
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| author | L. Piperno A. Vannozzi A. Augieri A. Masi A. Mancini A. Rufoloni G. Celentano V. Braccini M. Cialone M. Iebole N. Manca A. Martinelli M. Meinero M. Putti A. Meledin |
| author_facet | L. Piperno A. Vannozzi A. Augieri A. Masi A. Mancini A. Rufoloni G. Celentano V. Braccini M. Cialone M. Iebole N. Manca A. Martinelli M. Meinero M. Putti A. Meledin |
| author_sort | L. Piperno |
| collection | DOAJ |
| description | Abstract The fabrication of a Fe-based coated conductor (CC) becomes possible when Fe(Se,Te) is grown as an epitaxial film on a metallic oriented substrate. Thanks to the material’s low structural anisotropy, less strict requirements on the template microstructure allow for the design of a simplified CC architecture with respect to the REBCO multi-layered layout. This design, though, still requires a buffer layer to promote the oriented growth of the superconducting film and avoid diffusion from the metallic template. In this work, Fe(Se,Te) films are grown on chemically-deposited, CeO2-based buffer layers via pulsed laser deposition, and excellent properties are obtained when a Fe(Se,Te) seed layer is used. Among all the employed characterization techniques, transmission electron microscopy proved essential to determine the actual effect of the seed layer on the final film properties. Also, systematic investigation of the full current transport properties J(θ, H, T) is carried out: Fe(Se,Te) samples are obtained with sharp superconducting transitions around 16 K and critical current densities exceeding 1 MA cm−2 at 4.2 K in self-field. The in-field and angular behavior of the sample are in line with data from the literature. These results are the demonstration of the feasibility of a Fe-based CC, with all the relative advantages concerning process simplification and cost reduction. |
| first_indexed | 2024-04-10T22:48:24Z |
| format | Article |
| id | doaj.art-9d441995c8e04871a23ffe170cc71ac9 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T22:48:24Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9d441995c8e04871a23ffe170cc71ac92023-01-15T12:11:00ZengNature PortfolioScientific Reports2045-23222023-01-0113111110.1038/s41598-022-24044-5High-performance Fe(Se,Te) films on chemical CeO2-based buffer layersL. Piperno0A. Vannozzi1A. Augieri2A. Masi3A. Mancini4A. Rufoloni5G. Celentano6V. Braccini7M. Cialone8M. Iebole9N. Manca10A. Martinelli11M. Meinero12M. Putti13A. Meledin14ENEA, Frascati Research CentreENEA, Frascati Research CentreENEA, Frascati Research CentreENEA, Frascati Research CentreENEA, Frascati Research CentreENEA, Frascati Research CentreENEA, Frascati Research CentreCNR-SPINCNR-SPINCNR-SPINCNR-SPINCNR-SPINCNR-SPINPhysics Department, University of GenovaCentral Facility for Electron Microscopy, RWTH Aachen UniversityAbstract The fabrication of a Fe-based coated conductor (CC) becomes possible when Fe(Se,Te) is grown as an epitaxial film on a metallic oriented substrate. Thanks to the material’s low structural anisotropy, less strict requirements on the template microstructure allow for the design of a simplified CC architecture with respect to the REBCO multi-layered layout. This design, though, still requires a buffer layer to promote the oriented growth of the superconducting film and avoid diffusion from the metallic template. In this work, Fe(Se,Te) films are grown on chemically-deposited, CeO2-based buffer layers via pulsed laser deposition, and excellent properties are obtained when a Fe(Se,Te) seed layer is used. Among all the employed characterization techniques, transmission electron microscopy proved essential to determine the actual effect of the seed layer on the final film properties. Also, systematic investigation of the full current transport properties J(θ, H, T) is carried out: Fe(Se,Te) samples are obtained with sharp superconducting transitions around 16 K and critical current densities exceeding 1 MA cm−2 at 4.2 K in self-field. The in-field and angular behavior of the sample are in line with data from the literature. These results are the demonstration of the feasibility of a Fe-based CC, with all the relative advantages concerning process simplification and cost reduction.https://doi.org/10.1038/s41598-022-24044-5 |
| spellingShingle | L. Piperno A. Vannozzi A. Augieri A. Masi A. Mancini A. Rufoloni G. Celentano V. Braccini M. Cialone M. Iebole N. Manca A. Martinelli M. Meinero M. Putti A. Meledin High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers Scientific Reports |
| title | High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers |
| title_full | High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers |
| title_fullStr | High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers |
| title_full_unstemmed | High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers |
| title_short | High-performance Fe(Se,Te) films on chemical CeO2-based buffer layers |
| title_sort | high performance fe se te films on chemical ceo2 based buffer layers |
| url | https://doi.org/10.1038/s41598-022-24044-5 |
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