Fabrication of Tb3Al5O12 transparent ceramics using co-precipitated nanopowders

被引:0
作者
Dai, Jiawei [1 ,2 ]
Pan, Yubai [3 ]
Wang, Wei [1 ]
Luo, Wei [1 ,2 ]
Xie, Tengfei [1 ]
Kou, Huamin [1 ]
Li, Jiang [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shanghai Normal Univ, Dept Phys, Shanghai 200234, Peoples R China
基金
中国国家自然科学基金;
关键词
TAG powders; Co-precipitation synthesis; Transparent ceramics; Magneto-optical property; YTTRIUM-ALUMINUM-GARNET; TERBIUM GALLIUM GARNET; ND-YAG POWDERS; MAGNETOOPTICAL PROPERTIES; COPRECIPITATION SYNTHESIS; SINGLE-CRYSTALS; SOLID-STATE; OPTICAL-PROPERTIES; GROWTH; MICROSTRUCTURE;
D O I
10.1016/j.optmat.2017.07.047
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Terbium aluminum garnet (TAG) precursor was synthesized by a co-precipitation method from a mixed solution of terbium and aluminum nitrates using ammonium hydrogen carbonate (AHC) as the precipitant. The powders calcined at different temperatures were investigated by XRD, FTIR and FESEM in order to choose the optimal calcination temperature. Fine and low-agglomerated TAG powders with average particle size of 88 nm were obtained by calcining the precursor at 1100 degrees C for 4 h. Using this powder as starting material, TAG transparent ceramics were fabricated by vacuum sintering combined with hot isostatic pressing (HIP) sintering. For the sample pre-sintered at 1700 degrees C for 20 h with HIP post-treated at 1700 degrees C for 3 h, the average grain size is about 3.9 mu m and the in-line transmittance is beyond 55% in the region of 500-1600 nm, reaching a maximum transmittance of 64.2% at the wavelength of 1450 nm. The Verdet constant at 633 nm is measured to be -178.9 rad T-1 m(-1), which is 33% larger than that of the commercial TGG single crystal (-134 rad T-1 m(-1)). (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:38 / 44
页数:7
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