Magnetoplasmonic Properties of Nanoparticle Systems
Summary
Magnetoplasmonic nanoparticle systems harness the coupling between collective electron oscillations in noble metals and magnetic phenomena in ferromagnetic or ferrimagnetic phases. By combining plasmonic resonance with magnetic order, these hybrid nanostructures exhibit tunable optical absorption, enhanced magneto-optical activity and field‐controlled scattering. Key design parameters include particle composition, core–shell architecture, shape anisotropy and interparticle spacing, each influencing the strength and spectral position of resonances. The interplay between superparamagnetic relaxations and localized surface plasmon resonances can yield pronounced shifts in absorption peaks under external magnetic bias, enabling dynamic control of optical properties. Such systems hold promise for data storage, magnetic field sensing, biomedical imaging and photocatalysis, offering a platform for multifunctional devices that respond to both light and magnetic stimuli.
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Magnetoplasmonic Properties of Nanoparticle Systems publication trend
The graph below shows the total number of articles in magnetoplasmonic properties of nanoparticle systems across all publications each year (not limited to Nature Index journals).
Technical terms
Magnetoplasmonics: The study of hybrid phenomena arising from the interaction between plasmonic excitations in metals and magnetic order in adjacent materials, enabling control of optical properties via magnetic fields.
Localized surface plasmon resonance (LSPR): A collective oscillation of conduction electrons confined to the surface of a nanoparticle, leading to strong light absorption and scattering at a characteristic wavelength.
Core–shell nanoparticle: A composite nanoparticle consisting of an inner core material enclosed by an outer shell of a different composition, often used to combine magnetic and plasmonic functionalities.
Superparamagnetism: A magnetic behaviour in which single-domain nanoparticles exhibit rapid fluctuations of magnetisation at temperatures above a characteristic blocking threshold, resulting in zero net remanence in the absence of an external field.
Magnetic anisotropy: The dependence of a material’s magnetic energy on the direction of magnetisation, often enhanced at the nanoscale and influencing the stability of magnetic states in nanoparticles.
References
- Anomalously-large photo-induced magnetic response of metallic nanocolloids in aqueous solution using a solar simulator.. Optics Express (2012).
- Nanosized Core-Shell Ni/Au System and its Properties. Eurasian Chemico-Technological Journal (2015).
- Investigating of LSPR spectra on a hybrid Fe3O4-Au within core-shell structure. Journal of Physics Conference Series (2019).
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