Scripta materialia: Li Jiang research group of Shanghai Institute of silicate, Chinese Academy of Sciences has made a series of progress in the research of new terbium aluminum garnet based magneto-optical ceramics

Recently, the research group of transparent and optical functional ceramics led by Li Jiang, researcher of Shanghai Silicate Research Institute, Chinese Academy of Sciences, has made important progress in the research of new terbium aluminum garnet based magneto-optical ceramics The team synthesized 0.5at% Ho: tag nano powder by coprecipitation method, and then prepared Ho: tag transparent ceramics with excellent optical quality and magneto-optical properties by vacuum sintering and hip technology The linear transmittance of the material at 1064 nm reached 81.9%, and the Verdet constant at 632.8 nm was - 183.1 rad · T - 1 · m - 1, which was better than that of commercial TGG The single crystal is 36% higher Relevant research results were published in scripta materia, a famous international journal The first author of the paper is Dai Jiawei, doctoral candidate of Shanghai Silicate Institute, and the corresponding author is researcher Li Jiang (DOI: 10.1016 / j.scriptamat 2018.03.021) this work has been highly praised by the reviewer, who believes that "this is a novelpaper on magneto optical Verdet constant data on a transparent ceramic material is quite hard to grow as a single crystal" In view of the influence of this work, the research team was invited by Dr Subhash H risbud, editor in chief of scripta materia Journal (Professor, University of California, Davis), to write an opinion paper on magneto-optical ceramics for high power Faraday isolators, which was published in scripta in the form of viewpoint paper On materialia (DOI: 10.1016 / j.scriptamat 2018.06.031) They have successfully prepared Ce: tag and PR: tag magneto-optical ceramics with high optical quality by using CE 3 + and PR 3 + with ion radius close to TB 3 + as modified ions It is found that the Verdet constants of the doped tag magneto-optical ceramics are increased due to the influence of doping ions on the crystal field and the superexchange between the doped and Tb 3 +, and the Verdet constants of the 2.0 at% Ce: tag transparent ceramics at 632.8 nm are - 196.2 rad · T-1 · M-1, which are 9% and 46% higher than that of the tag ceramics and commercial TGG crystals, respectively Relevant results were published on scripta materia (DOI: 10.1016 / j.scriptamat June 023, 2018)
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