Lattice distortion boosted exceptional electromagnetic wave absorption in high-entropy diborides

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-03-05 DOI:10.1016/j.matt.2025.102004

Fangchao Gu , Wu Wang , Hong Meng , Yiwen Liu , Lei Zhuang , Hulei Yu , Yanhui Chu

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Abstract

Electromagnetic pollution has emerged as a severe global issue due to the widespread use of wireless communication, which strongly requires high-performance electromagnetic wave absorbents. Here, we realize exceptional electromagnetic wave absorption performance with an effective absorption bandwidth of 7.2 GHz at an ultralow thickness of 1.5 mm in high-entropy diborides through a lattice distortion engineering strategy. Particularly, we rationally tailor the lattice distortion of high-entropy diborides by manipulating constituent metal elements, and the resultant metal vacancies and chemical nanoclusters are verified to result in enriched electromagnetic wave absorption mechanisms, including (1) metal vacancy-induced dipole polarization loss, (2) metal vacancy-induced conduction loss, and (3) chemical nanocluster-induced interfacial polarization loss. Our work provides a simple and universal approach for effectively enhancing the electromagnetic wave absorption performance of ceramic absorbents.

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晶格畸变促进高熵二硼化物对特殊电磁波的吸收

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.