首页|ⅢA-ⅡB multicomponent perovskite rare earth ferrites with promising electromagnetic wave absorption properties

ⅢA-ⅡB multicomponent perovskite rare earth ferrites with promising electromagnetic wave absorption properties

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Perovskite-type rare-earth ferrites(REFeO3)are promising materials for absorbing electromagnetic(EM)wave pollution.However,insufficient dielectric loss and poor impedance matching are key factors that limit the broader implementation of REFeO3.Herein,a series of multicomponent perovskite-type ferrites with strong EM wave absorption capabilities was prepared.Through the synergistic effect of chemical constitution regulation and entropy regulation,optimization of the dielectric loss and impedance matching is achieved by strengthening the structural defect mechanism,thus further adjusting the EM wave absorption performance.Compared with(LaGdSmNdBa)FeO3(HE-1)and(LaGdPrSmNdBa)FeO3(HE-2),(LaGdBa)FeO3(ME-1)and(LaGdSmBa)FeO3(ME-2)exhibit favorable performance,with optimal minimum reflection loss(RLmin)of-56.35 dB(at 11.12 GHz)and-63.25 dB(at 7.22 GHz)and effective absorption bandwidth(EAB)of 4.46 and 4.72 GHz,respectively.This multicomponent design provides a new strategy for the development of EM wave absorption materials.

Rare earthsMulticomponent designRare earth ferritesEntropy regulationElectromagnetic wave absorption

Yanyan He、Tao Chen、Yanyu Pan、Minzhong Huang、Kaixian Wang、Liyan Xue、Yazhu Li、Fengzhi Tan、Fan Yang、Tongkuan Xu、Heng Chen

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School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian,116034,China

Xiamen Institute of Rare Earth Materials,Haixi Institutes,Chinese Academy of Sciences,Xiamen,361021,China

Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,350002,China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou,350108,China

Xiamen Key-Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Haixi Institute,Chinese Academy of Sciences,Xiamen,361021,China

Key Laboratory o

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国家重点研发计划Young Elite Scientists Sponsorship Program by China Association for Science and TechnologyFujian Provincial Natural Fund ProjectXIREM Autonomously Deployment Project

2022YFB3504302YESS202103362021J051012023GG03

2024

10.1016/j.jre.2024.03.019

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(6)
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