Electromagnetic wave absorption performance of Ti_(2)O_(3)and vacancy enhancement effective bandwidth

作     者：Xiankai Fu Bo Yang Wanqi Chen Zongbin Li Haile Yan Xiang Zhao Liang Zuo Xiankai Fu;Bo Yang;Wanqi Chen;Zongbin Li;Haile Yan;Xiang Zhao;Liang Zuo

作者机构：Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)School of Material Science and Engineering.Northeastern UniversityShenyang110819China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第76卷第17期

页      面：166-173页

核心收录：

学科分类：081702[工学-化学工艺] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(Nos.52071071,51431005,51571056,51771048 and 51601033) the Liao Ning Revitalization Talents Program(No.XLYC1802023) the Fundamental Research Funds for the Central Universities of China(Nos.N180204011 and N180204013) 

主　　题：Ti_(2)O_(3) Microwave absorption Vacancy Electric dipoles First-principles 

摘      要：The microwave absorption properties of Ti_(2)O_(3)were systematically *** results indicate that Ti_(2)O_(3)has microwave absorption performance with a minimum reflection loss value of-37.6 d B at 18.6 GHz and an effective absorption bandwidth(RL-10 d B)of 2 ***,vacancy defects were introduced into Ti_(2)O_(3)by carbothermal ***,the effective absorption bandwidth of Ti_(2)O_(3)with vacancy defects reach 3.2 ***-principles calculations provide evidence that vacancy defects result in the changes of electric dipole state,leading to a wider effective absorption *** results have significance in understanding the origin of electromagnetic phenomena and developing electromagnetic wave absorption materials.