Production and characterization of highly transparent novel magneto-optical Ho_(2)Zr_(2)O_(7) ceramics with anion-deficient fluorite structures
作者机构：School of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang ProvinceNingbo 315211China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第150卷第19期
页 面：217-224页
核心收录：
学科分类：080503[工学-材料加工工程] 08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the Zhejiang Provincial Natural Science Foundation of China (Grant No.LY23F050007) the Department of Education of Zhejiang Province (No.Y202146207)
主 题：Transparent ceramics Ho_(2)Zr_(2)O_(7) Magneto-optical ceramics Fluorite Optical properties
摘 要：Based on material design idea,we employ a co-precipitation strategy to obtain sinterable Ho_(2)Zr_(2)O_(7) flu-orite particles,successfully leading to novel transparent Ho_(2)Zr_(2)O_(7) ceramics with good optical/magneto-optical *** resulting precipitation precursor is identified to be hydrated basic carbonate upon calcination at the optimum temperature of 1250℃into near-spherical Ho_(2)Zr_(2)O_(7) nanopowder with an average size of~64 nm and unimodal narrow size *** crystal intrinsic oxygen defect in fluorite ceramic generally exists in the form of F+*** best bulk specimen achieved in this work exhibits a high refractive index of~2.1 and a high transparency of~74.4%at 1000 nm comparable with the corresponding defect-free single crystal(~76.4%in theory).In the Ho_(2)Zr_(2)O_(7) structure system,the elec-tronic polarizability of O_(2)-anion generally remains constant around 2.2?3 in the visible region and the corresponding optical basicity is approximately *** developed magneto-optical transparent Ho_(2)Zr_(2)O_(7) ceramic has Verdet constants of-180±3,-157±5,-87±2,-54±2,and-43±2 rad T^(-1) m^(-1) at 515,635,780,980,and 1064 nm,respectively,which are roughly 1.2-fold higher than the commercial TGG crystal.
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