INVESTIGATION OF ELECTROMAGNETIC WAVE ABSORPTION PROPERTIES OF Fe/La1.5Sr0.5NiO4 COMPOSITES

Nguyễn Thị Xuân; Lê Mỹ Phương; Chu Thị Anh Xuân

doi:10.34238/tnu-jst.9664

INVESTIGATION OF ELECTROMAGNETIC WAVE ABSORPTION PROPERTIES OF Fe/La1.5Sr0.5NiO4 COMPOSITES

About this article

Received: 31/01/24 Revised: 23/02/24 Published: 23/02/24

Authors

1. Nguyen Thi Xuan, Vietnam Maritime University
2. Le My Phuong, Vietnam Maritime University
3. Chu Thi Anh Xuan , TNU - University of Sciences

Abstract

In this paper, we propose an effective method to improve the broadband absorption performance of composite materials based on Fe magnetic metal nanoparticles. The capability of absorbing electromagnetic waves in the frequency range from 2-18 GHz of Fe-xLa_1,5Sr_0,5NiO₄ (Fe-xLSNO) composites is systematically investigated. Experimental results confirm that Fe-xLSNO composites not only maintain good broadband absorption (EAB) but also improve absorption performance. The Fe-xLSNO composites with LSNO replacement concentration up to 50% gives the lowest reflection loss value at the resonance peak reaching RL = -19.62 dB at f_R = 9.84 GHz and EAB = 10.56 GHz. On the other hand, the results also show the effect of shifting the resonance peak toward the high frequency region with increasing LSNO concentration. Our results contribute to the search for materials that absorption electromagnetic waves materials in the GHz frequency range based on the combination of magnetic metal nanoparticles with dielectrics.

Keywords

Electromagnetic Wave Absorption; Composite; Reflection Loss; Impendance; Magnetic metal

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DOI: https://doi.org/10.34238/tnu-jst.9664

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