A caging strategy for tuning the magneto-optical properties of cobalt ferrite using a single plasmonic nanoparticle. Issue 15 (16th March 2021)

• Record Type: Journal Article
• Authors: Testa-Anta, Martín; Sousa-Castillo, Ana; López-Ortega, Alberto; Correa-Duarte, Miguel A.; García-Martín, Antonio; Vavassori, Paolo; Salgueiriño, Verónica
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 15(2021)
• Page Start: 5098
• Page End: 5104
• Publication Date: 2021-03-16
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc00580d
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Investigations of the Faraday effect in silica capsules with numerous CoFe2 O4 nanoparticles and one single gold nanoparticle demonstrate the plasmon-induced changes in the MOA of the ferrite and highlights the caging strategy designed. Abstract : 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.