Eu oxidation state in fluorozirconate-based glass ceramics
Eu oxidation state in fluorozirconate-based glass ceramics
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DOI：
10.1063/1.3259390
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发表时间：
2009-12-01
影响因子：
3.2
通讯作者：
Schweizer, S.
中科院分区：
文献类型：
--
作者：
Henke, B.;Passick, C.;Schweizer, S.
采用近边X射线吸收光谱和光学光谱研究了InF（3）掺杂和重熔对Eu掺杂氟锆酸盐基微晶玻璃的影响。结果表明，InF（3）的加入降低了Eu（2+）/Eu（3+）的摩尔比，而重熔则使Eu（2+）/Eu（3+）的摩尔比发生显著变化，有利于Eu（2+）的加入。光致发光光谱表明，额外的退火步骤导致在玻璃中形成BaCl（2）纳米颗粒。在含有InF（3）的微晶玻璃中，观察到了纳米颗粒由六方晶向正交晶的相变。在本文研究的重熔玻璃中没有观察到这种相变。
The influence of InF(3) doping and remelting on Eu-doped fluorozirconate-based glass ceramics was investigated using near-edge x-ray absorption and optical spectroscopy. It was found that the addition of InF(3) to the melt decreases the Eu(2+)/Eu(3+) mole ratio, while remelting leads to a significant change in the Eu(2+)/Eu(3+) ratio in favor of Eu(2+). Photoluminescence spectroscopy shows that additional annealing steps lead to the formation of BaCl(2) nanoparticles in the glass. In as-made glass ceramics containing InF(3), a phase transition of the nanoparticles from hexagonal to orthorhombic structure is observed. This phase transition is not observed in the remelted glasses studied here.