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Barium ferrite decorated reduced graphene oxide nanocomposite for effective electromagnetic interference shielding
Meenakshi Verma1, Avanish Pratap Singh, Pradeep Sambyal
1Centre for Polymer Science & Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, 110016, India. veenach@hotmail.com.
Physical Chemistry Chemical Physics : PCCP
|December 2, 2014
Summary
A novel barium ferrite decorated reduced graphene oxide (BaFe12O19@RGO) nanocomposite offers excellent microwave shielding. This material achieves high electromagnetic interference shielding effectiveness, demonstrating potential for advanced microwave absorbing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Growing demand for effective microwave shielding materials to combat electromagnetic pollution.
- Need for advanced nanocomposites with superior electromagnetic properties.
Purpose of the Study:
- Synthesize and characterize barium ferrite decorated reduced graphene oxide (BaFe12O19@RGO) nanocomposite.
- Investigate the microwave shielding performance of the BaFe12O19@RGO nanocomposite in the Ku band (12.4-18 GHz).
Main Methods:
- High energy ball milling technique for nanocomposite synthesis.
- Characterization of barium ferrite nanoparticle distribution on reduced graphene oxide sheets.
- Measurement of electromagnetic properties and shielding effectiveness.
Main Results:
- Successfully synthesized BaFe12O19@RGO nanocomposite with well-distributed 20-30 nm BaFe12O19 nanoparticles.
- Achieved a saturation magnetization of 18.1 emu g⁻¹.
- Exhibited a high electromagnetic interference shielding effectiveness of 32 dB (99.9% attenuation) at 3 mm thickness, attributed to enhanced polarization, resonance, scattering, and anisotropy.
Conclusions:
- The BaFe12O19@RGO nanocomposite demonstrates significant potential as a high-performance microwave absorbing material.
- The synergistic effects within the nanocomposite contribute to its superior shielding capabilities.
- This material is a promising candidate for developing next-generation electromagnetic pollution mitigation solutions.
