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Introducing cobalt as a potential plasmonic candidate combining optical and magnetic functionalities within the same

Macilia Braik¹, Idrissa Sow², Jaysen Nelayah³

¹Université de Paris, Laboratoire ITODYS, CNRS, F-75006 Paris, France. nordin.felidj@univ-paris-diderot.fr jean-yves.piquemal@univ-paris-diderot.fr and Université Mouloud Mammeri de Tizi-Ouzou, LPCQ, BP 17 RP, 15000 Tizi-Ouzou, Algeria.

|January 26, 2021

Summary

Cobalt nanoparticles exhibit tunable plasmonic properties across UV to NIR wavelengths. Optimizing inter-particle distance enhances their optical and magnetic functionalities for photonic devices.

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Area of Science:

Nanotechnology
Materials Science
Plasmonics

Background:

Controlling nanoscale magnetic properties is crucial for advanced applications.
Combining magnetic and plasmonic nanoparticles enhances magneto-optical signals.
Understanding nanoparticle coupling is key for developing photonic devices.

Purpose of the Study:

To evaluate cobalt nanoparticles' plasmonic properties at the nanoscale.
To explore cobalt as a single-metal candidate for combined optical and magnetic functionalities.
To investigate the effect of inter-particle distance on plasmonic behavior in cobalt nanoparticle arrays.

Main Methods:

Fabrication of regular arrays of cobalt nanoparticles.
Characterization of plasmonic properties across UV to Near-Infrared (NIR) spectral range.
Analysis of the influence of inter-particle distance on plasmonic quality factors.

Main Results:

Cobalt nanoparticles display plasmonic properties over a broad spectral range (UV to NIR).
Efficient quality factors were achieved by selecting appropriate inter-particle distances.
Demonstrated potential for cobalt as a single material integrating magnetic and plasmonic functions.

Conclusions:

Cobalt nanoparticle arrays offer tunable plasmonic properties.
Proper control of inter-particle spacing is essential for optimizing performance.
These materials are promising for integrated photonic devices in telecommunications.