@article{LI2022, 
author = {Depeng LI and Zhikai YAN and Biao ZHAO and Li GUAN and Bingbing FAN and Hailong WANG and Rui ZHANG},
title = {Preparation and Microwave Absorption Properties of (Fe, Co, Ni, Cu, Zn)CrxOy High-Entropy Multiphase Ceramics},
year = {2022},
journal = {Journal of the Chinese Ceramic Society},
volume = {50},
number = {6},
pages = {1489-1498},
keywords = {high-entropy ceramics, spinel structure, dielectric loss, perovskite structure, electromagnetic wave absorption property},
url = {https://www.sciopen.com/article/10.14062/j.issn.0454-5648.20211179},
doi = {10.14062/j.issn.0454-5648.20211179},
abstract = {Based on the in-depth study of high-entropy alloys, a concept of configuration entropy stable single phase is introduced into inorganic non-metallic materials, thus developing high-entropy ceramics. The advantage of high-entropy ceramics is the diversity of composition and structure, which makes them have an application potential as functional materials. In this paper, high-entropy multiphase ceramics with a spinel structure and a perovskite structure were synthesized by a simple solid-state sintering method. The phase composition, microstructure, element content and valence state, and electromagnetic wave absorption properties were investigated. The microwave absorption properties of high-entropy multiphase ceramics sintered at different temperatures were analyzed. The results show that the high-entropy multiphase ceramics can be prepared, and two crystal structures (i.e., spinel structure and perovskite structure) can be formed due to the high-entropy effect. At 1300 ℃, there exists a maximum dielectric constant. The high-entropy multiphase ceramics prepared have the optimum electromagnetic wave absorption performance when the frequency range is 8.2–12.4 GHz.}
}