Effect of Microstructure on the Radioluminescence and Transparency of Ce-Doped Strontium Hafnate Ceramics.
Effect of Microstructure on the Radioluminescence and Transparency of Ce-Doped Strontium Hafnate Ceramics.
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DOI：
10.1016/j.optmat.2010.08.013
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发表时间：
2010-11-01
影响因子：
3.9
通讯作者：
Shah, Kanai S.
中科院分区：
文献类型：
--
作者：
van Loef, Edgar V.;Wang, Yimin;Miller, Stuart R.;Brecher, Charles;Rhodes, William H.;Baldoni, Gary;Topping, Stephen;Lingertat, Helmut;Sarin, Vinod K.;Shah, Kanai S.
在本文中，我们报告的SrHfO3：Ce陶瓷的制备和表征。使用金属氧化物和碳酸盐通过固态合成制备粉末。X射线衍射测试表明，在1200°C时生成纯相SrHfO3。电感耦合等离子体光谱法确认了各批次的纯度和组成。SrHfO3在固体中表现出几种相变，但这似乎对陶瓷无害。微探针实验表明，均匀的元素晶粒组成，而铝作为电荷补偿三价铈聚集在晶界和三相点。辐射发光光谱表明，当过量Sr的浓度增加时，光产额降低。光产额的降低可能与Ce 3+转化为Ce 4+有关。对于化学计量比SrHfO3：Ce，光产额约为锗酸铋（BGO）的四倍，常规基准，表明许多闪烁体应用的巨大潜力。
In this paper we report on the fabrication and characterization of SrHfO3:Ce ceramics. Powders were prepared by solid-state synthesis using metal oxides and carbonates. X-ray diffraction measurements showed that phase-pure SrHfO3 is formed at 1200°C. Inductively coupled plasma spectroscopy confirmed the purity and composition of each batch. SrHfO3 exhibits several phase changes in the solid, but this does not appear to be detrimental to the ceramics. Microprobe experiments showed uniform elemental grain composition, whereas aluminum added as charge compensation for trivalent cerium congregated at grain boundaries and triple points. Radioluminescence spectra revealed that the light yield decreases when the concentration of excess Sr increases. The decrease in the light yield may be related to the change of Ce3+ into Ce4+ ions. For stoichiometric SrHfO3:Ce, the light yield is about four times that of bismuth germanate (BGO), the conventional benchmark, indicating great potential for many scintillator applications.
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影响因子：
3.9
作者：
Retot, H.;Bessiere, A.;Viana, B.
通讯作者：
Viana, B.
影响因子：
3.7
作者：
Kennedy, BJ;Howard, CJ;Chakoumakos, BC
通讯作者：
Chakoumakos, BC
影响因子：
3.9
作者：
Loureiro, SM;Gao, Y;Venkataramani, V
通讯作者：
Venkataramani, V
影响因子：
6.2
作者：
Yamanaka, S;Maekawa, T;Kurosaki, K
通讯作者：
Kurosaki, K
DOI：
10.1111/j.1151-2916.2003.tb03325.x
发表时间：
2003-03-01
影响因子：
3.9
作者：
Apetz, R;van Bruggen, MPB
通讯作者：
van Bruggen, MPB