Transparent Tb3Ga5O12 magneto-optical ceramics sintered from co-precipitated nano-powders calcined at different temperatures
Transparent Tb3Ga5O12 magneto-optical ceramics sintered from co-precipitated nano-powders calcined at different temperatures
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DOI：
10.1016/j.optmat.2019.02.009
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发表时间：
2019-04
影响因子：
3.9
通讯作者：
Xiaoying Li;Qiang Liu;Hongming Pan;Nan Jiang;Zhaoxiang Yang;Tengfei Xie;Lexiang Wu;Jiangxu Li
中科院分区：
文献类型：
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作者：
Xiaoying Li;Qiang Liu;Hongming Pan;Nan Jiang;Zhaoxiang Yang;Tengfei Xie;Lexiang Wu;Jiangxu Li
以共沉淀法合成的纳米铽镓石榴石（TGG）为原料，采用空气烧结和热等静压（HIP）后处理工艺制备了TGG陶瓷。详细研究了煅烧温度对纳米粉体的物相和形貌演变的影响，以及所得TGG陶瓷的透光性和显微结构。在1100-1250 °C下煅烧的粉末保持TGG相纯度并且显示出显著更少的团聚。以上述粉体为原料，在空气中1500 °C预烧3 h，然后在150 MPa氩气中1550 °C热等静压处理3 h，所制备的TGG陶瓷具有相似的光学性能，在1064 nm处的在线透过率约为70%。所有陶瓷的费尔德常数在室温下计算为约137 rad T− 1 m − 1，这几乎与陶瓷的光学质量无关。
Terbium gallium garnet (TGG) ceramics were fabricated by air sintering and successive HIP post-treating from the TGG nanoparticles synthesized via the co-precipitation technique. The influences of the calcination temperature on the phase and morphology evolution of the nano-powders, as well as the optical transparency and microstructure of the obtained TGG ceramics were investigated in detail. The powders calcined at 1100–1250 °C retained the TGG phase purity and displayed significantly less agglomeration. Using the above powders as raw materials, the TGG ceramics pre-sintered at 1500 °C for 3 h in air and then HIP post-treated at 1550 °C for 3 h under 150 MPa argon gas showed the similar optical qualities and the in-line transmittances were about 70% at 1064 nm. The Verdet constants of all the ceramics were calculated to be about 137 rad T−1m−1at room temperature, which were nearly independent of the optical quality of the ceramics.