Development of SrFe12O19/Ti3SiC2 Composites for Enhanced Microwave Absorption

Garg, Avesh and Goel, Shivanshu and Kumari, Neelam and Dubey, Ashish and Prasad, N.E. and Tyagi, Sachin (2020) Development of SrFe12O19/Ti3SiC2 Composites for Enhanced Microwave Absorption. Journal of Electronic Materials, 49. pp. 2233-2241. ISSN 0361-5235

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Official URL: https://link.springer.com/article/10.1007/s11664-0...

Abstract

Microwave absorbing composites containing strontium hexaferrite and titanium silicon carbide, SrFe12O19/Ti3SiC2 powder, were synthesized by mixing in different weight ratios. The strontium hexaferrite (SrFe12O19) particles were synthesized using low-temperature combustion. The ‘as synthesized’ strontium hexaferrite powder is observed to have low coercivity (255.09 G) and high saturation magnetization (45.1 emu/g). The titanium silicon carbide (Ti3SiC2) powder was synthesized by heat treatment of the precursors (Ti/Si/TiC) at 1100°C under argon atmosphere. A microwave absorbing composite is fabricated by mixing in a high-energy ball mill followed by heating of SrFe12O19 and Ti3SiC2 powders at 200°C. The maximum reflection loss of − 39.67 dB is observed at 9.46 GHz for the composite casted into pellets containing 20% Ti3SiC2 and 80% SrFe12O19 with 2-mm thickness. The bandwidth for less than − 10 dB loss is observed to be 2.77 GHz (66% of the total band). The developed magneto-dielectric composition confirmed its candidacy as a potential microwave absorbing material.

Item Type: Article
Subjects: CSIO > Microelectronics
Depositing User: Ms. Jyotsana
Date Deposited: 10 Aug 2020 11:03
Last Modified: 10 Aug 2020 11:03
URI: http://csioir.csio.res.in/id/eprint/838

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