Interfacial electron rearrangement of 3D Fe_(3)O_(4)/h-YFeO_(3)composites for efficient electromagnetic wave absorption

作     者：Yi Sui Yingde Zhang Guang Liu Lei Ji Junyu Yue Chen Wu Mi Yan Yi Sui;Yingde Zhang;Guang Liu;Lei Ji;Junyu Yue;Chen Wu;Mi Yan

作者机构：School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive UtilizationBaotou Research Institute of Rare EarthsBaotou 014030China Key Laboratory of Rare EarthsChinese Academy of SciencesGanzhou 341119China Shanxi-Zheda Institute of Advanced Materials and Chemical EngineeringTaiyuan 030032China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报(英文版))

年 卷 期：2025年第32卷第3期

页      面：609-618页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.52122106 and 52027802) the“Pioneer”Research and Development Program of Zhejiang Province,China(No.2022C01230) the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,China(No.2021SZ-FR005) the Space Application System of China Manned Space Program(No.KJZ-YY-NCL03) the opening fund of Key Laboratory of Rare Earths,Chinese Academy of Sciences 

主　　题：self-assembling heterojunction electron rearrangement interface modulation electromagnetic wave absorption 

摘      要：Interface modulation is an important pathway for highly efficient electromagnetic wave ***,tailored interfaces between Fe_(3)O_(4)particles and the hexagonal-YFeO_(3)(h-YFeO_(3))framework were constructed via facile *** resulting interfa-cial electron rearrangement at the heterojunction led to enhanced dielectric and magnetic loss *** results and density function theory(DFT)simulations demonstrate a transition in electrical properties from a half-metallic monophase to metallic Fe_(3)O_(4)/h-YFeO_(3)composites,emphasizing the advantages of the formed *** transformation of electron behavior is also accompan-ied by a redistribution of electrons at the Fe_(3)O_(4)/h-YFeO_(3)heterojunction,leading to the accumulation of localized electrons around the Y-O-Fe band bridge,consequently enhancing the polarization.A minimum reflection loss of-34.0 dB can be achieved at 12.0 GHz and 2.0 mm thickness with an effective bandwidth of 3.3 GHz due to the abundant interfaces,enhanced polarization,and rational ***,the synergistic effects endow the Fe_(3)O_(4)/h-YFeO_(3)composites with high performance and tunable functional properties for efficient electromagnetic absorption.