Title :
Electromagnetic properties of Co-Zr substituted Ba-Sr ferrite-paraffin wax composite for EMC/EMI applications
Author :
Singh, Charanjeet ; Narang, S. Bindra ; Hudiara, I.S.
Author_Institution :
Dept. of ECE, Rayat-Bahra Inst. of Eng. & Nanotecnology Hoshiarpur Punjab, Hoshiarpur, India
Abstract :
The electromagnetic parameters of synthesized M-type hexagonal ferrite composites, Ba0.5Sr0.5CoxZrxFe(12-2x)O19 (x=0.0, 0.2, 0.4, 0.6, 0.8, 1.0), are measured from 0.1-18 GHz. The ferrite composites exhibit dielectric behavior contrary to conventional magnetic nature of ferrite composites. The electron hopping between Fe2+ ions and Fe3+ ions enhances dielectric properties making it useful for EMI/EMC applications. The relationship is established between microstructure and microwave properties. The damped domain wall dispersion is observed along low frequency region. The various mechanisms behind variations of investigated parameters are discussed.
Keywords :
barium compounds; cobalt compounds; composite materials; dielectric losses; eddy current losses; ferrites; hopping conduction; magnetic domain walls; magnetic leakage; permittivity; strontium compounds; zirconium compounds; AC conductivity; Ba0.5Sr0.5CoxZrxFe(12-2x)O19; M-type hexagonal ferrite composite materials; damped domain wall dispersion; dielectric constant; dielectric loss; dielectric property; electromagnetic properties; electron hopping; frequency 0.1 GHz to 18 GHz; magnetic loss; magnetic nature; microstructure; microwave properties; Conductivity; Dielectrics; Ferrites; Ions; Magnetic resonance; Magnetomechanical effects; Permeability;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050733
