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Plasmon Induced Magneto-Optical Enhancement in Metallic Ag/FeCo Core/Shell Nanoparticles Synthesized by Colloidal Chemistry

Abstract

The combination of magnetic and plasmonic materials and their nanostructurization have been revealed a prominent pathway to develop novel photonic materials for the active control of the light polarization using a magnetic field. Up to now, the physical growth methods have shown the only exploitable approach to prepare these types of nanostructures. Here, we demonstrate the chemical synthesis of magneto-plasmonic core/shell nanocrystals with enhanced magnetic control of optical properties comparable to the best results reported for nanostructures growth by physical method. Ag/FeCo core/shell nanocrystals were synthesized in a combination of hot injection and polyol approaches, demonstrating that the well-defined structures of both components, their interface and the optimized morphology, where the plasmonic and magnetic components are placed in the core and the shell regions, are the responsible of the observed large enhancement of magnetic control of light polarization. Therefore, it is confirmed the possibility to develop tunable magneto-optical materials by hybrid magneto-plasmonic structures synthesized by chemical methods.

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Supplementary files

Publication details

The article was received on 19 Apr 2018, accepted on 04 Sep 2018 and first published on 04 Sep 2018


Article type: Paper
DOI: 10.1039/C8NR03201G
Citation: Nanoscale, 2018, Accepted Manuscript
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    Plasmon Induced Magneto-Optical Enhancement in Metallic Ag/FeCo Core/Shell Nanoparticles Synthesized by Colloidal Chemistry

    A. López-Ortega, M. Takahashi, S. Maenosono and P. Vavassori, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR03201G

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