Incorporation of Pr into LuAG ceramics
Incorporation of Pr into LuAG ceramics
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DOI：
10.1016/j.optmat.2016.09.056
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发表时间：
2017-06
影响因子：
3.9
通讯作者：
M. R. Marchewka;M. G. Chapman;Haijun Qian;L. G. Jacobsohn
中科院分区：
文献类型：
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作者：
M. R. Marchewka;M. G. Chapman;Haijun Qian;L. G. Jacobsohn
采用X射线衍射（XRD）、X射线能量色散谱（EDX）、衰减全反射傅里叶变换红外光谱（ATR-FTIR）和发光测量等手段研究了Pr在（Lu 1-xPrx）3Al 5 O 12（LuAG：Pr）陶瓷中的作用。结果发现，Pr浓度，最大限度地提高发光取决于热处理条件。虽然煅烧的LuAG：Pr粉末在Pr浓度为0.18 - 0.33原子%时显示出最大发光发射，在1500 °C烧结20 h的陶瓷体中，当Pr浓度在0.018 ~ 0.18at.%之间时，获得最大发射。此外，对于短的烧结时间高达约3小时，发光发射强度是最大的Pr浓度约0.33原子%。较长的烧结时间导致PrAlO 3作为第二相的形成，伴随着发光强度的降低。
An investigation of the effects of Pr in (Lu1-xPrx)3Al5O12(LuAG:Pr) ceramics was carried out by means of x-ray diffraction (XRD), energy dispersive x-ray spectroscopy (EDX), and attenuated total reflection Fourier transform infrared spectroscopy (ATR FTIR) measurements coupled with luminescence measurements. It was found that the Pr concentration that maximizes luminescence emission depends on the thermal processing conditions. While the calcined LuAG:Pr powder showed maximum luminescence emission for Pr concentrations between 0.18 and 0.33 at.%, maximum emission of ceramic bodies sintered at 1500 °C for 20 h was obtained with Pr concentrations between 0.018 and 0.18 at.%. Further, for short sintering times up to about 3 h, luminescence emission intensity is maximum for Pr concentrations around 0.33 at.%. Longer sintering times lead to the formation of PrAlO3as a secondary phase, concomitant with a reduction of the intensity of luminescence emission.