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

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

The electromagnetic parameters of synthesized M-type hexagonal ferrite composites, Ba_0.5Sr_0.5Co_xZr_xFe_(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; Ba_0.5Sr_0.5Co_xZr_xFe_(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;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050733

Filename

6050733