Dobretsova Elena, Zhmykhov Vadim, Kuznetsov Sergey, Chikulina Irina, Nikova Marina, Tarala Vitaly, Vakalov Dmitry, Khmelnitsky Roman, Pynenkov Alexander, Nishchev Konstantin, Tsvetkov Vladimir
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, 119991, Russia.
North Caucasus Federal University, Scientific and Laboratory Complex Clean Room, Stavropol, 355017, Russia.
Dalton Trans. 2021 Oct 19;50(40):14252-14256. doi: 10.1039/d1dt02419a.
High erbium content yttrium aluminum garnet (Er:YAG) and yttrium scandium aluminum garnet (Er:YSAG) ceramics have been fabricated from Er:YAG and Er:YSAG powders, respectively. The powders have been synthesized a reverse precipitation technique, processed by uniaxial pressing followed by cold isostatic pressing, and sintered in a vacuum. TEOS (tetraethoxysilane) was used as a sintering additive. After vacuum sintering, all of the samples were processed by annealing in air to increase the transmittance and polished on both sides. The influence of the Sc content and the synthesis conditions on the microstructure and optical transparency of the Er:YAG and Er:YSAG ceramics have been investigated in detail. It has been found that changing Al for the bigger Sc ion leads to the transmittance increasing to up to 60% at a wavelength of about 1500 nm.
高铒含量的钇铝石榴石（Er:YAG）和钇钪铝石榴石（Er:YSAG）陶瓷分别由Er:YAG和Er:YSAG粉末制成。这些粉末采用反向沉淀技术合成，先通过单轴压制，再进行冷等静压处理，然后在真空中烧结。四乙氧基硅烷（TEOS）用作烧结添加剂。真空烧结后，所有样品均在空气中进行退火处理以提高透过率，并对两面进行抛光。详细研究了Sc含量和合成条件对Er:YAG和Er:YSAG陶瓷微观结构和光学透明度的影响。研究发现，用较大的Sc离子取代Al会使在约1500 nm波长处的透过率提高至60%。
