The features of morphology and crystalline structure of the monodisperse Lu_2O_3:Eu~(3+) submicrospheres prepared by sol-gel method

Yulia Yermolayeva; Alexander Tolmachev; Valentin Tkachenko; Nikolay Danylenko; Ryhor Fedaruk

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The features of morphology and crystalline structure of the monodisperse Lu_2O_3:Eu~(3+) submicrospheres prepared by sol-gel method

机译：溶胶-凝胶法制备的单分散Lu_2O_3：Eu〜（3+）亚微球的形貌和晶体结构特征

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Monodisperse Lu_2O_3:Eu3+ submicrospheres with the diameters ranging from 40 to 400 nm were obtained by the urea-based homogeneous precipitation technique with subsequent spheres crystallization during annealing. The inner structure, morphology of Lu_2O_3:Eu~(3+) polycrystalline spheres and thermal stability of the particles shape were investigated by means of transmission electron microscopy (TEM), X-ray diffractometry (XRD) and electron paramagnetic resonance (EPR). Eu~(3+) -doped lutetium oxide spheres were characterized by effective luminescence under X-ray excitation in the λ= 575-725 nm range corresponding to 5D_o→~7F， transitions (J=0-4) of Eu~(3+) ions. Experimental data showed that the X-ray luminescence efficiency increases with the increase of the crystallites size, which occurred by the annealing temperature and particles diameter.

机译：通过基于尿素的均相沉淀技术获得直径为40-400 nm的单分散Lu_2O_3：Eu3 +亚微球，随后在退火过程中使球结晶。通过透射电子显微镜（TEM），X射线衍射（XRD）和电子顺磁共振（EPR）研究了Lu_2O_3：Eu〜（3+）多晶球的内部结构，形貌以及颗粒形状的热稳定性。 Eu〜（3+）掺杂的氧化sphere球的特征是在X射线激发下在对应于5D_o→〜7F的λ= 575-725 nm范围内有效发光，Eu〜（3）的跃迁（J = 0-4） +）离子。实验数据表明，X射线的发光效率随着微晶尺寸的增加而增加，这是由退火温度和粒径引起的。

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来源
《Journal of Crystal Growth》 |2011年第1期|p.87-91|共5页
作者
Yulia Yermolayeva; Alexander Tolmachev; Valentin Tkachenko; Nikolay Danylenko; Ryhor Fedaruk;
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作者单位

Scientific and Technological Corporation. Institute for Single Crystals, NAS of Ukraine, Kharkov, Ukraine;

Scientific and Technological Corporation. Institute for Single Crystals, NAS of Ukraine, Kharkov, Ukraine;

Scientific and Technological Corporation. Institute for Single Crystals, NAS of Ukraine, Kharkov, Ukraine;

I. Frantsevich Institute for Problems in Materials Science, NAS of Ukraine, Kiev, Ukraine;

Institute of Physics, University of Szczecin, Szczecin, Poland;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
A1. Low dimensional structures; A1. Morphological stability; A1. Crystallites; B1. Rare earth compounds; B2. Phosphors;

机译：A1。低维结构;A1。形态稳定性;A1。晶体;B1。稀土化合物;B2。荧光粉;

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The features of morphology and crystalline structure of the monodisperse Lu_2O_3:Eu~(3+) submicrospheres prepared by sol-gel method

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