81. A Caging Strategy for tuning the Magneto-Optical Properties of Cobalt Ferrite using a Single Plasmonic Nanoparticle

Martín Testa-Anta, Ana Sousa-Castillo, Alberto López-Ortega, Miguel A. Correa-Duarte, Antonio García-Martín, Paolo Vavassori and Verónica Salgueiriño

Journal of Materials Chemistry C (2021), 9, 5098-5104 (DOI: 10.1039/d1tc00580d).

The composite nanostructures with magnetic and plasmonic functionalities herein described were produced according to a unique synthetic strategy by which numerous cobalt ferrite nanoparticles accompanied by an individual gold nanoparticle were confined in silica capsules. This assembly offers a distinctive system on which the influence of the surface plasmon of a single 20 or 60 nm-in-diameter gold nanoparticle is proved to increase the visible range magneto-optical activity of the cobalt ferrite magnetic material. Consequently, it provides a key strategy for the production of nanostructures including different materials as building blocks, taking advantage of the confined coupling for the development of materials with enhanced magneto-optical capabilities.

 46 2021 JMaterChemC