铽铝石榴石磁光陶瓷真空固相反应制备及格位取代研究进展  

Research Progress on Vacuum Solid-State Reaction Preparation and Lattice Substitution of TAG Magneto-Optic Ceramics

作　　者：陈杰[1,2] 沈世纪 田燕娜 周圣明 CHEN Jie;SHEN Shiji;TIAN Yanna;ZHOU Shengming(Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Key Laboratory of Materials for High-Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;School of Physical Science and Technology,Shanghai Tech University,Shanghai 201210,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海光学精密机械研究所,空天激光技术与系统部,上海201800 [2]中国科学院上海光学精密机械研究所,中国科学院强激光材料重点实验室,上海201800 [3]上海科技大学物质科学与技术学院,上海201210 [4]中国科学院大学材料与光电研究中心,北京100049

出　　处：《人工晶体学报》2024年第11期1927-1935,共9页Journal of Synthetic Crystals

基　　金：国家重点研发计划(2023YFB3812000);上海市自然科学基金面上项目(22ZR1470800)。

摘　　要：作为一类典型的高能固体激光系统用石榴石透明陶瓷,铽铝石榴石(Tb_(3)Al_(5)O_(12),TAG)磁光陶瓷以其优良的磁光性能和高功率服役特性成为相关领域的研究焦点。本文聚焦于真空固相反应法制备TAG磁光陶瓷,尤其是烧结助剂和格位掺杂改性等方面的优化工作,通过对比得到了TAG陶瓷较为合适的添加剂种类,总结了TAG陶瓷长期以来质量难以进一步提升的根本原因,即对较大剂量烧结助剂的依赖和烧结助剂残留导致的组分不均匀性之间的矛盾关系。针对以上问题,介绍了本团队近期的研究进展,即一种通过Mg^(2+)-Si^(4+)格位共掺,在不减少MgO和TEOS绝对用量的情况下,通过一步真空固态烧结工艺制备更高光学质量TAG陶瓷的方法,最佳样品在1064 nm处的透过率达到82.48%。采用晶格掺杂而非传统质量比添加烧结助剂,有望为高能激光系统用石榴石透明陶瓷质量进一步突破提供一种新的有效思路。As a typical garnet transparent ceramic used in high-energy solid-state laser systems,terbium aluminum garnet(Tb_(3)Al_(5)O 12,TAG)magneto-optic ceramics have become a focal point of research due to their excellent magneto-optic properties and high-power performance.This paper focuses on TAG magneto-optic ceramics prepared by vacuum solid-state reaction,with particular emphasis on the optimization of sintering aids and lattice doping modifications.By comparison,the most suitable additives for TAG ceramics were identified.The study highlights the longstanding challenge in improving the quality of TAG ceramics,which arises from the reliance on large doses of sintering aids and the resulting compositional inhomogeneity caused by sintering aid residues.To address these issues,we present our latest research,which involves co-doping the lattice with Mg^(2+)and Si_(4+).This approach enables the preparation of higher optical quality TAG ceramics via a one-step vacuum solid-state sintering process,without reducing the absolute amount of MgO and TEOS.The best sample achieve a transmittance of 82.48%at 1064 nm,which,to our knowledge,is the highest value reported using a similar sintering method based on domestic powders.This lattice doping strategy,rather than the traditional mass-ratio addition of sintering aids,offers a promising new approach for further improving the quality of garnet transparent ceramics used in high-energy laser systems.

关 键 词：TAG 磁光透明陶瓷 烧结助剂 组分不均匀性 格位共掺 Mg 2+-Si 4+ 

分 类 号：O734[理学—晶体学]