Microwave absorption properties and mechanism of novel apatite-type materials Mn₂Gd₇.₅Ce₀.₅(SiO₄)₆O₂

Haikun  Liu; Xiaoming  Liu; Ning  Liu; Lefu  Mei

doi:10.59400/mtr1630

Microwave absorption properties and mechanism of novel apatite-type materials Mn₂Gd₇.₅Ce₀.₅(SiO₄)₆O₂

Haikun Liu National Center of Technology Innovation for Display, Guangdong Juhua Research Institute of Advanced Display, Guangzhou 510525, China
Xiaoming Liu National Center of Technology Innovation for Display, Guangdong Juhua Research Institute of Advanced Display, Guangzhou 510525, China
Ning Liu School of Science, China University of Geosciences, Beijing 100083, China; School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Lefu Mei School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China

Ariticle ID: 1630

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DOI: https://doi.org/10.59400/mtr1630

Keywords: apatite structure; Mn₂Gd₇.₅Ce₀.₅(SiO₄)₆O₂; microwave absorption performance

Abstract

Manganese minerals possess a high intrinsic magnetic moment, making them excellent materials for microwave absorption. Rare earth elements, with their unique electronic structures and interactions between spin electrons and orbitals, can further enhance the performance of absorbing materials. In this study, we designed a novel microwave absorbing material by incorporating manganese into an apatite structure with adjustable chemical composition. The material Mn₂Gd₇.₅Ce₀.₅(SiO₄)₆O₂, exhibiting specific microwave absorption properties, was synthesized using a high-temperature solid-phase method. The results indicate that at a sample thickness of 5 mm, the absorption frequency bandwidth below −10 dB within the 2–12 GHz range reaches 1.2 GHz, with a peak absorption of −21.78 dB. Additionally, smaller particles were prepared using the sol-gel method, achieving a peak absorption of −39.75 dB. The primary absorption mechanism for both particle types is attributed to magnetic loss. This work presents a new approach to designing microwave absorbing materials and significantly contributes to expanding the range of apatite-type materials.

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Published

2024-11-20

How to Cite

Liu, H., Liu, X., Liu, N., & Mei, L. (2024). Microwave absorption properties and mechanism of novel apatite-type materials Mn₂Gd₇.₅Ce₀.₅(SiO₄)₆O₂. Materials Technology Reports, 2(2), 1630. https://doi.org/10.59400/mtr1630

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