{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:02:57Z","timestamp":1760148177195,"version":"build-2065373602"},"reference-count":62,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,4,5]],"date-time":"2023-04-05T00:00:00Z","timestamp":1680652800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004281","name":"National Science Centre (NCN), Poland","doi-asserted-by":"publisher","award":["2021\/42\/E\/ST5\/00262"],"award-info":[{"award-number":["2021\/42\/E\/ST5\/00262"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The enhanced performance of superconducting FeSe0.5Te0.5 materials with added micro-sized Pb and Sn particles is presented. A series of Pb- and Sn-added FeSe0.5Te0.5 (FeSe0.5Te0.5 + xPb + ySn; x = y = 0\u20130.1) bulks are fabricated by the solid-state reaction method and characterized through various measurements. A very small amount of Sn and Pb additions (x = y \u2264 0.02) enhance the transition temperature (Tconset) of pure FeSe0.5Te0.5 by ~1 K, sharpening the superconducting transition and improving the metallic nature in the normal state, whereas larger metal additions (x = y \u2265 0.03) reduce Tconset by broadening the superconducting transition. Microstructural analysis and transport studies suggest that at x = y &gt; 0.02, Pb and Sn additions enhance the impurity phases, reduce the coupling between grains, and suppress the superconducting percolation, leading to a broad transition. FeSe0.5Te0.5 samples with 2 wt% of cometal additions show the best performance with their critical current density, Jc, and the pinning force, Fp, which might be attributable to providing effective flux pinning centres. Our study shows that the inclusion of a relatively small amount of Pb and Sn (x = y \u2264 0.02) works effectively for the enhancement of superconducting properties with an improvement of intergrain connections as well as better phase uniformity.<\/jats:p>","DOI":"10.3390\/ma16072892","type":"journal-article","created":{"date-parts":[[2023,4,5]],"date-time":"2023-04-05T06:08:00Z","timestamp":1680674880000},"page":"2892","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Cometal Addition Effect on Superconducting Properties and Granular Behaviours of Polycrystalline FeSe0.5Te0.5"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-3131-6174","authenticated-orcid":false,"given":"Manasa","family":"Manasa","sequence":"first","affiliation":[{"name":"Institute of High Pressure Physics (IHPP), Polish Academy of Sciences, Sokolowska 29\/37, 01-142 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-1012-6021","authenticated-orcid":false,"given":"Mohammad","family":"Azam","sequence":"additional","affiliation":[{"name":"Institute of High Pressure Physics (IHPP), Polish Academy of Sciences, Sokolowska 29\/37, 01-142 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9100-2938","authenticated-orcid":false,"given":"Tatiana","family":"Zajarniuk","sequence":"additional","affiliation":[{"name":"Institute of Physics, Polish Academy of Sciences, Aleja Lotnik\u00f3w 32\/46, 02-668 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0590-6824","authenticated-orcid":false,"given":"Ryszard","family":"Diduszko","sequence":"additional","affiliation":[{"name":"Institute of Physics, Polish Academy of Sciences, Aleja Lotnik\u00f3w 32\/46, 02-668 Warsaw, Poland"},{"name":"Institute of Microelectronics and Photonics, W\u00f3lczy\u0144ska 133, 01-919 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomasz","family":"Cetner","sequence":"additional","affiliation":[{"name":"Institute of High Pressure Physics (IHPP), Polish Academy of Sciences, Sokolowska 29\/37, 01-142 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrzej","family":"Morawski","sequence":"additional","affiliation":[{"name":"Institute of High Pressure Physics (IHPP), Polish Academy of Sciences, Sokolowska 29\/37, 01-142 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrzej","family":"Wi\u015bniewski","sequence":"additional","affiliation":[{"name":"Institute of Physics, Polish Academy of Sciences, Aleja Lotnik\u00f3w 32\/46, 02-668 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5769-1787","authenticated-orcid":false,"given":"Shiv J.","family":"Singh","sequence":"additional","affiliation":[{"name":"Institute of High Pressure Physics (IHPP), Polish Academy of Sciences, Sokolowska 29\/37, 01-142 Warsaw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"16017","DOI":"10.1038\/natrevmats.2016.17","article-title":"High-temperature superconductivity in iron pnictides and chalcogenides","volume":"1","author":"Si","year":"2016","journal-title":"Nat. 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