Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

High-Temperature Lightweight Ceramics with Nano-sized Ferrites for EMI Shielding: Synthesis, Characterization, and Potential Applications

Vitalijs Abramovskis
,
Ilmars Zalite
ORCID logo ,
Mikhail Maiorov
ORCID logo ,
Janis Baronins
,
Ashish Kumar Singh
ORCID logo ,
Vjaceslavs Lapkovskis
ORCID logo ,
Saurav Goel
,
Andrei Shishkin
*
Version 1 : Received: 2 November 2023 / Approved: 2 November 2023 / Online: 2 November 2023 (11:08:44 CET)

A peer-reviewed article of this Preprint also exists.

Abramovskis, V.; Zalite, I.; Maiorov, M.; Baronins, J.; Singh, A.K.; Lapkovskis, V.; Goel, S.; Shishkin, A. High-Temperature, Lightweight Ceramics with Nano-Sized Ferrites for EMI Shielding: Synthesis, Characterisation, and Potential Applications. Materials 2023, 16, 7615. Abramovskis, V.; Zalite, I.; Maiorov, M.; Baronins, J.; Singh, A.K.; Lapkovskis, V.; Goel, S.; Shishkin, A. High-Temperature, Lightweight Ceramics with Nano-Sized Ferrites for EMI Shielding: Synthesis, Characterisation, and Potential Applications. Materials 2023, 16, 7615.

Abstract

Present study focuses on the synthesis and characterisation of a lightweight ceramic material with electromagnetic interference (EMI) shielding properties, achieved using mullite containing micrometer-sized hollow spheres (cenospheres) and CoFe2O4 nanoparticles. The research explores compositions with varying CoFe2O4 content, ranging from 0 up to 20 wt.%. Сonventional sintering in an air atmosphere is carried out at a temperature between 1100-1300 °C. The addition of ferrite nanoparticles was found to enhance the sintering process of cenospheres, resulting in improved material density and mechanical properties. Furthermore, the study reveals a direct correlation between the concentration of ferrite nanoparticles and the electromagnetic properties of the. By increasing the concentration of ferrite nanoparticles, the electromagnetic shielding effect of the material (saturation magnetization (Ms) and remanent magnetization (Mr)) was observed to strengthen. These findings provide valuable insights into the design and development of lightweight ceramic materials with enhanced electromagnetic shielding capabilities. The synthesized ceramic material holds promise for various applications that require effective electromagnetic shielding, such as in electronics, telecommunications, and aerospace industries.

Keywords

cenospheres; CoFe2O4; high-temperature sintering; magnetic properties; syntactic foam

Subject

Chemistry and Materials Science, Ceramics and Composites

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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