Electromagnetic Response of SiO₂@Fe₃O₄ Core–Shell Nanostructures in the THz Regime
| Autor: | Kazunori Serita, Arka Chaudhuri, Masayoshi Tonouchi, Kalyan Mandal, Rupali Rakshit |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Diffraction Nanostructure Materials science Terahertz radiation business.industry Nanoparticle engineering.material 01 natural sciences Electronic Optical and Magnetic Materials Coating Transmission electron microscopy 0103 physical sciences Electromagnetic shielding engineering Optoelectronics Electrical and Electronic Engineering Absorption (electromagnetic radiation) business |
| Zdroj: | IEEE Transactions on Magnetics. 57:1-6 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/tmag.2021.3056575 |
| Popis: | 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 Stober 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. |
| Databáze: | OpenAIRE |
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