Effect of Sc substitution on the phase composition,microstructure,and properties of(Tb_(1−x)Sc_(x))_(3)(Al_(1−y)Sc_(y))_(2)Al_(3)O_(12) transparent ceramics

作     者：Lixuan Zhang Chen Hu Xiao Li Zhenzhen Zhou Tingsong Li Yiyang Liu Lexiang Wu Jiang Li 

作者机构：Transparent Ceramics Research CenterShanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341000China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2024年第13卷第9期

页      面：1442-1452页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Key R&D Program of China(Grant No.2023YFB3812000) the General Project of Shanghai Natural Science Foundation(Grant No.22ZR1471500) the Prospective Basic Research and Applied Basic Research of Hengdian Group 

主　　题：terbium aluminum garnet ceramics magneto-optical materials microstructures anti-site defects(ADs) firstprinciples calculations 

摘      要：Terbium aluminum garnet(Tb_(3)Al_(5)O_(12);TAG)ceramics are among the most promising magneto–optical materials owing to their outstanding comprehensive *** works have focused on improving the optical quality of TAG ceramics.A key point for improving optical quality is ensuring the accuracy of the stoichiometric ratio and avoiding secondary *** this work,0,2,4,or 6 wt%Sc2O3 was added to the TAG ceramics to increase the solid *** effects of Sc substitution on the crystal structure,sintering process,microstructure,optical transmittance,and magneto–optical properties of(Tb_(1−x)Sc_(x))_(3)(Al_(1−y)Sc_(y))_(2)Al_(3)O_(12)(TSAG)ceramics are studied in detail.4 wt%Sc2O3:TAG ceramics with an in-line transmittance of 82.2%at 1064 nm and 81.2%at 633 nm were successfully fabricated,and the Verdet constant was 164.4 rad·T^(−1)·m^(−1) at 633 ***-site defects(ADs)and Sc replacement in TAG are further studied via first-principles calculations to determine the working mechanism of *** the experimental and calculation results show that the introduction of Sc can effectively increase the solid solubility of TAG ceramics,suppress secondary phases,and hence improve the optical transmittance.