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

Authors

Bijoy K. Kuanr, University of Colorado at Colorado Springs
V. Veerakumar, University of Colorado at Colorado Springs
K. Lingam, University of Memphis
S. R. Mishra, University of Memphis
Alka V. Kuanr, Shaheed Rajguru College of Applied Sciences for Women
R. E. Camley, University of Colorado at Colorado SpringsFollow
Z. Celinski, University of Colorado at Colorado SpringsFollow

Abstract

We studied the magnetic field dependence of the resonance frequency (fr) and frequency linewidth (Δf) of iron oxide nanoparticles (Fe3 O4) 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. © 2009 American Institute of Physics.

Publication Title

Journal of Applied Physics

Recommended Citation

Kuanr, B., Veerakumar, V., Lingam, K., Mishra, S., Kuanr, A., Camley, R., & Celinski, Z. (2009). Size dependent microwave properties of ferrite nanoparticles: Application to microwave devices. Journal of Applied Physics, 105 (7) https://doi.org/10.1063/1.3073836