Size dependent microwave properties of ferrite nanoparticles: Application to microwave devices

Autor:	Robert E. Camley, Zbigniew Celinski, Sanjay R. Mishra, V. Veerakumar, Bijoy K. Kuanr, Kiran Lingam, Alka V. Kuanr
Rok vydání:	2009
Předmět:	Materials science business.industry Coplanar waveguide Analytical chemistry Physics::Optics General Physics and Astronomy Ferromagnetic resonance Magnetic field Magnetization Laser linewidth Optoelectronics Particle Particle size business Microwave
Zdroj:	Journal of Applied Physics. 105:07B522
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.3073836
Popis:	We studied the magnetic field dependence of the resonance frequency (fr) and frequency linewidth (Δf) of iron oxide nanoparticles (Fe3O4) with different particle sizes spin-coated on a coplanar waveguide. Using a vector network analyzer, we find that the resonance frequency increases with an increase in applied field for all particle sizes, while Δf decreases with the increase in the particle size. We have also carried out a theoretical study using the power absorbed by the different regions of the coplanar waveguide and found that the results are in accordance with the experiment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::97c9227d97580a009332061d02e0ddfe https://doi.org/10.1063/1.3073836 Zobrazit plný text záznamu