Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures

Hybrid core–shell nanostructures consisting of permalloy (Ni(80)Fe(20)) and multiferroic(BiFeO(3), BFO/BiFe(0.95)Co(0.05)O(3), BFC) materials were synthesized by a two-step method, based on wet chemical impregnation and subsequent electrodeposition within porous alumina membranes. Structural and mag...

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Autores principales: Javed, K., Li, W. J., Ali, S. S., Shi, D. W., Khan, U., Riaz, S., Han, X. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4677379/
https://www.ncbi.nlm.nih.gov/pubmed/26658956
http://dx.doi.org/10.1038/srep18203
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author Javed, K.
Li, W. J.
Ali, S. S.
Shi, D. W.
Khan, U.
Riaz, S.
Han, X. F.
author_facet Javed, K.
Li, W. J.
Ali, S. S.
Shi, D. W.
Khan, U.
Riaz, S.
Han, X. F.
author_sort Javed, K.
collection PubMed
description Hybrid core–shell nanostructures consisting of permalloy (Ni(80)Fe(20)) and multiferroic(BiFeO(3), BFO/BiFe(0.95)Co(0.05)O(3), BFC) materials were synthesized by a two-step method, based on wet chemical impregnation and subsequent electrodeposition within porous alumina membranes. Structural and magnetic characterizations have been done to investigate doping effect on magnetic properties and exchange bias. The magnetometry analysis revealed significant enhancements of the exchange bias and coercivity in NiFe-BFC core-shell nanostructures as compared with NiFe-BFO core-shell nanostructures. The enhancements can be attributed to the effective reduction of ferromagnet domain sizes between adjacent layers of core-shell structure. It indicates that it is possible to improve properties of multiferroic composites by site-engineering method. Our approach opens a pathway to obtain optimized nanostructured multiferroic composites exhibiting tunable magnetic properties.
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spelling pubmed-46773792015-12-17 Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures Javed, K. Li, W. J. Ali, S. S. Shi, D. W. Khan, U. Riaz, S. Han, X. F. Sci Rep Article Hybrid core–shell nanostructures consisting of permalloy (Ni(80)Fe(20)) and multiferroic(BiFeO(3), BFO/BiFe(0.95)Co(0.05)O(3), BFC) materials were synthesized by a two-step method, based on wet chemical impregnation and subsequent electrodeposition within porous alumina membranes. Structural and magnetic characterizations have been done to investigate doping effect on magnetic properties and exchange bias. The magnetometry analysis revealed significant enhancements of the exchange bias and coercivity in NiFe-BFC core-shell nanostructures as compared with NiFe-BFO core-shell nanostructures. The enhancements can be attributed to the effective reduction of ferromagnet domain sizes between adjacent layers of core-shell structure. It indicates that it is possible to improve properties of multiferroic composites by site-engineering method. Our approach opens a pathway to obtain optimized nanostructured multiferroic composites exhibiting tunable magnetic properties. Nature Publishing Group 2015-12-14 /pmc/articles/PMC4677379/ /pubmed/26658956 http://dx.doi.org/10.1038/srep18203 Text en Copyright © 2015, 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
Javed, K.
Li, W. J.
Ali, S. S.
Shi, D. W.
Khan, U.
Riaz, S.
Han, X. F.
Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title_full Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title_fullStr Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title_full_unstemmed Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title_short Enhanced exchange bias and improved ferromagnetic properties in Permalloy–BiFe(0.95)Co(0.05)O(3) core–shell nanostructures
title_sort enhanced exchange bias and improved ferromagnetic properties in permalloy–bife(0.95)co(0.05)o(3) core–shell nanostructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4677379/
https://www.ncbi.nlm.nih.gov/pubmed/26658956
http://dx.doi.org/10.1038/srep18203
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