Electromagnetic Response of SiO@FeO Core-Shell Nanostructures in the THz Regime

Chaudhuri, A and Rakshit, R and Serita, K and Tonouchi, M and Mandal, K (2021) Electromagnetic Response of SiO@FeO Core-Shell Nanostructures in the THz Regime. In: IEEE Transactions on Magnetics, 57 (5).

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Abstract

Magnetite (Fe3O4) nanoparticles (NPs) of diameter 100 nm and nano-hollow spheres (NHSs) of diameter 100, 185, 250, 350, and 725 nm have been synthesized by a facile one-step template-free solvothermal technique. Silica (SiO2) coating on their surface has been carried out following the Stöber method. X-ray diffraction and high-resolution transmission electron microscope images confirmed the phase and morphology of the nanostructures (NSs). Furthermore, we have investigated the terahertz (THz) wave absorption properties of SiO2@Fe3O4 shell/shell NSs in the frequency range of 0.9-2.0 THz. Detailed morphology and size-dependent THz absorption study proves that these particles can be very useful as electromagnetic shielding devices.

Item Type:	Journal Article
Publication:	IEEE Transactions on Magnetics
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Electromagnetic shielding; ferrites; magnetic nanoparticles (NPs); nanostructured materials.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	30 Nov 2023 03:37
Last Modified:	30 Nov 2023 03:37
URI:	https://eprints.iisc.ac.in/id/eprint/82981

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