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Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations

High magnetocaloric refrigeration performance requires large magnetic entropy change ΔS(M) and broad working temperature span ΔT(FWHM). A fourth element doping of Co in ternary Ni-Mn-Sn alloy may significantly enhance the saturation magnetization of the alloy and thus enhance the ΔS(M). Here, the ef...

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Autores principales: Zhang, Xuexi, Zhang, Hehe, Qian, Mingfang, Geng, Lin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5974186/
https://www.ncbi.nlm.nih.gov/pubmed/29844436
http://dx.doi.org/10.1038/s41598-018-26564-5
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author Zhang, Xuexi
Zhang, Hehe
Qian, Mingfang
Geng, Lin
author_facet Zhang, Xuexi
Zhang, Hehe
Qian, Mingfang
Geng, Lin
author_sort Zhang, Xuexi
collection PubMed
description High magnetocaloric refrigeration performance requires large magnetic entropy change ΔS(M) and broad working temperature span ΔT(FWHM). A fourth element doping of Co in ternary Ni-Mn-Sn alloy may significantly enhance the saturation magnetization of the alloy and thus enhance the ΔS(M). Here, the effects of Co-doping on the martensite transformation, magnetic properties and magnetocaloric effects (MCE) of quaternary Ni(47−x)Mn(43)Sn(10)Co(x) (x = 0, 6, 11) alloys were investigated. The martensite transformation temperatures decrease while austenite Curie point increases with Co content increasing to x = 6 and 11, thus broadening the temperature window for a high magnetization austenite (13.5, 91.7 and 109.1 A·m(2)/kg for x = 0, 6 and 11, respectively). Two successive magnetostructural transformations (A → 10 M and A → 10 M + 6 M) occur in the alloy x = 6, which are responsible for the giant magnetic entropy change ΔS(M = )29.5 J/kg·K, wide working temperature span ΔT(FWHM) = 14 K and large effective refrigeration capacity RC(eff) = 232 J/kg under a magnetic field of 5.0 T. These results suggest that Ni(40.6)Mn(43.3)Sn(10.0)Co(6.1) alloy may act as a potential solid-state magnetic refrigerant working at room temperature.
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spelling pubmed-59741862018-05-31 Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations Zhang, Xuexi Zhang, Hehe Qian, Mingfang Geng, Lin Sci Rep Article High magnetocaloric refrigeration performance requires large magnetic entropy change ΔS(M) and broad working temperature span ΔT(FWHM). A fourth element doping of Co in ternary Ni-Mn-Sn alloy may significantly enhance the saturation magnetization of the alloy and thus enhance the ΔS(M). Here, the effects of Co-doping on the martensite transformation, magnetic properties and magnetocaloric effects (MCE) of quaternary Ni(47−x)Mn(43)Sn(10)Co(x) (x = 0, 6, 11) alloys were investigated. The martensite transformation temperatures decrease while austenite Curie point increases with Co content increasing to x = 6 and 11, thus broadening the temperature window for a high magnetization austenite (13.5, 91.7 and 109.1 A·m(2)/kg for x = 0, 6 and 11, respectively). Two successive magnetostructural transformations (A → 10 M and A → 10 M + 6 M) occur in the alloy x = 6, which are responsible for the giant magnetic entropy change ΔS(M = )29.5 J/kg·K, wide working temperature span ΔT(FWHM) = 14 K and large effective refrigeration capacity RC(eff) = 232 J/kg under a magnetic field of 5.0 T. These results suggest that Ni(40.6)Mn(43.3)Sn(10.0)Co(6.1) alloy may act as a potential solid-state magnetic refrigerant working at room temperature. Nature Publishing Group UK 2018-05-29 /pmc/articles/PMC5974186/ /pubmed/29844436 http://dx.doi.org/10.1038/s41598-018-26564-5 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhang, Xuexi
Zhang, Hehe
Qian, Mingfang
Geng, Lin
Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title_full Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title_fullStr Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title_full_unstemmed Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title_short Enhanced magnetocaloric effect in Ni-Mn-Sn-Co alloys with two successive magnetostructural transformations
title_sort enhanced magnetocaloric effect in ni-mn-sn-co alloys with two successive magnetostructural transformations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5974186/
https://www.ncbi.nlm.nih.gov/pubmed/29844436
http://dx.doi.org/10.1038/s41598-018-26564-5
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