English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/131672
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Enhanced magnetic properties in antiferromagnetic-core/ferrimagnetic-shell nanoparticles

AuthorsVasilakaki, Marianna; Trohidou, Kalliopi N.; Nogués, Josep
Issue Date2015
PublisherNature Publishing Group
CitationScientific Reports 5: 9609 (2015)
AbstractBi-magnetic core/shell nanoparticles are gaining increasing interest due to their foreseen applications. Inverse antiferromagnetic(AFM)/ferrimagnetic(FiM) core/shell nanoparticles are particularly appealing since they may overcome some of the limitations of conventional FiM/AFM systems. However, virtually no simulations exist on this type of morphology. Here we present systematic Metropolis Monte Carlo simulations of the exchange bias properties of such nanoparticles. The coercivity, HC, and loop shift, Hex, present a non-monotonic dependence with the core diameter and the shell thickness, in excellent agreement with the available experimental data. Additionally, we demonstrate novel unconventional behavior in FiM/AFM particles. Namely, while HC and Hex decrease upon increasing FiM thickness for small AFM cores (as expected), they show the opposite trend for large cores. This presents a counterintuitive FiM size dependence for large AFM cores that is attributed to the competition between core and shell contributions, which expands over a wider range of core diameters leading to non-vanishing Hex even for very large cores. Moreover, the results also hint different possible ways to enhance the experimental performance of inverse core/shell nanoparticles for diverse applications.
DescriptionThis work is licensed under a Creative Commons Attribution 4.0 International License.
Publisher version (URL)http://dx.doi.org/10.1038/srep09609
Identifiersdoi: 10.1038/srep09609
issn: 2045-2322
Appears in Collections:(CIN2) Artículos
Files in This Item:
File Description SizeFormat 
ShellNanoparticles.pdf1,37 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.