Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys

In this work, we studied the phase transitions and exchange bias of Ni(50−x)Mn(36)Sn(14)T(x) (T = Pd, Pt; x = 0, 1, 2, 3) alloys. An intermartensitic transition (IMT), not observed in Ni(50)Mn(36)Sn(14) alloy, was induced by the proper application of negative chemical pressure by Pd(Pt) doping in Ni...

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Autores principales: Dong, S. Y., Chen, J. Y., Han, Z. D., Fang, Y., Zhang, L., Zhang, C. L., Qian, B., Jiang, X. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4864378/
https://www.ncbi.nlm.nih.gov/pubmed/27170057
http://dx.doi.org/10.1038/srep25911
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author Dong, S. Y.
Chen, J. Y.
Han, Z. D.
Fang, Y.
Zhang, L.
Zhang, C. L.
Qian, B.
Jiang, X. F.
author_facet Dong, S. Y.
Chen, J. Y.
Han, Z. D.
Fang, Y.
Zhang, L.
Zhang, C. L.
Qian, B.
Jiang, X. F.
author_sort Dong, S. Y.
collection PubMed
description In this work, we studied the phase transitions and exchange bias of Ni(50−x)Mn(36)Sn(14)T(x) (T = Pd, Pt; x = 0, 1, 2, 3) alloys. An intermartensitic transition (IMT), not observed in Ni(50)Mn(36)Sn(14) alloy, was induced by the proper application of negative chemical pressure by Pd(Pt) doping in Ni(50−x)Mn(36)Sn(14)T(x) (T = Pd, Pt) alloys. IMT weakened and was suppressed with the increase of applied field; it also disappeared with further increase of Pd(Pt) content (x = 3 for Pd and x = 2 for Pt). Another striking result is that exchange bias effect, ascribed to the percolating ferromagnetic domains coexisting with spin glass phase, is notably enhanced by nonmagnetic Pd(Pt) addition. The increase of unidirectional anisotropy by the addition of Pd(Pt) impurities with strong spin-orbit coupling was explained by Dzyaloshinsky-Moriya interactions in spin glass phase.
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spelling pubmed-48643782016-05-23 Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys Dong, S. Y. Chen, J. Y. Han, Z. D. Fang, Y. Zhang, L. Zhang, C. L. Qian, B. Jiang, X. F. Sci Rep Article In this work, we studied the phase transitions and exchange bias of Ni(50−x)Mn(36)Sn(14)T(x) (T = Pd, Pt; x = 0, 1, 2, 3) alloys. An intermartensitic transition (IMT), not observed in Ni(50)Mn(36)Sn(14) alloy, was induced by the proper application of negative chemical pressure by Pd(Pt) doping in Ni(50−x)Mn(36)Sn(14)T(x) (T = Pd, Pt) alloys. IMT weakened and was suppressed with the increase of applied field; it also disappeared with further increase of Pd(Pt) content (x = 3 for Pd and x = 2 for Pt). Another striking result is that exchange bias effect, ascribed to the percolating ferromagnetic domains coexisting with spin glass phase, is notably enhanced by nonmagnetic Pd(Pt) addition. The increase of unidirectional anisotropy by the addition of Pd(Pt) impurities with strong spin-orbit coupling was explained by Dzyaloshinsky-Moriya interactions in spin glass phase. Nature Publishing Group 2016-05-12 /pmc/articles/PMC4864378/ /pubmed/27170057 http://dx.doi.org/10.1038/srep25911 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Dong, S. Y.
Chen, J. Y.
Han, Z. D.
Fang, Y.
Zhang, L.
Zhang, C. L.
Qian, B.
Jiang, X. F.
Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title_full Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title_fullStr Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title_full_unstemmed Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title_short Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys
title_sort intermartensitic transformation and enhanced exchange bias in pd (pt) -doped ni-mn-sn alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4864378/
https://www.ncbi.nlm.nih.gov/pubmed/27170057
http://dx.doi.org/10.1038/srep25911
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