Статья

Multiprincipal Element M<sub>2</sub>FeC (M = Ti,V,Nb,Ta,Zr) MAX Phases with Synergistic Effect of Dielectric and Magnetic Loss

Lu ChenCollege of Materials Science and Opto‐electronic Technology University of Chinese Academy of Sciences 19 A Yuquan Rd, Shijingshan District Beijing 100049 ChinaYoubing LiEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 ChinaBiao ZhaoLaboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials School of Microelectronics Fudan University Shanghai 200438 ChinaShanshan LiuState Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 ChinaHuibin ZhangLaboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials School of Microelectronics Fudan University Shanghai 200438 ChinaKe ChenEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 ChinaMian LiEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 ChinaShiyu DuEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 ChinaFaxian XiuState Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 ChinaRenchao CheLaboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials School of Microelectronics Fudan University Shanghai 200438 ChinaZhifang ChaiEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 ChinaQing HuangEngineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 China

2023en

ABI

Аннотация

Abstract Electromagnetic (EM) wave pollution is harmful to human health and environment, thus it is absolutely important to develop new electromagnetic wave absorbing materials. MAX phases have been attracted more attention as a potential candidate for electromagnetic wave absorbing materials due to their high conductivity and nanolaminated structure. Herein, two new magnetic MAX phases with multiprincipal elements ((Ti 1/3 Nb 1/3 Ta 1/3 ) 2 FeC and (Ti 0.2 V 0.2 Nb 0.2 Ta 0.2 Zr 0.2 ) 2 FeC) in which Fe atoms replace Al atoms in the A sites are successfully synthesized by an isomorphous replacement reaction of multiprincipal (Ti 1/3 Nb 1/3 Ta 1/3 ) 2 AlC and (Ti 0.2 V 0.2 Nb 0.2 Ta 0.2 Zr 0.2 ) 2 AlC MAX phases with Lewis acid salt (FeCl 2 ). (Ti 1/3 Nb 1/3 Ta 1/3 ) 2 FeC and (Ti 0.2 V 0.2 Nb 0.2 Ta 0.2 Zr 0.2 ) 2 FeC exhibit ferromagnetic behavior, and the Curie temperature ( T c ) are 302 and 235 K, respectively. The dual electromagnetic absorption mechanisms that include dielectric and magnetic loss, which is realized in these multiprincipal MAX phases. The minimum reflection loss (RL) of (Ti 1/3 Nb 1/3 Ta 1/3 ) 2 FeC is −44.4 dB at 6.56 GHz with 3 mm thickness, and the effective bandwidth is 2.48 GHz. Additionally, the electromagnetic wave absorption properties of the magnetic MAX phases indicate that magnetic loss also plays an important role besides dielectric loss. This work shows a promising composition‐design strategy to develop MAX phases with good EM wave absorption performance via simultaneously regulating dielectric and magnetic loss together.

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Идентификаторы

DOI: 10.1002/advs.202206877

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar