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首页> 外文期刊>Physics of the solid state >Spectral and structural characteristics of Lu1-x - yCexTbyBO3 orthoborates prepared by the hydrothermal synthesis method
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Spectral and structural characteristics of Lu1-x - yCexTbyBO3 orthoborates prepared by the hydrothermal synthesis method

机译：通过水热合成法制备Lu1-X - YCExTBO3官酸盐的光谱和结构特征

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摘要

The structure, IR absorption spectra, morphology, and photoluminescence spectral characteristics of Lu1-x-y Ce (x) Tb (y) BO3 solid solutions prepared by the hydrothermal synthesis method have been investigated. According to the X-ray powder diffraction data, the Lu1-x-y Ce (x) Tb (y) BO3 samples hydrothermally synthesized at a temperature T = 200A degrees C have the vaterite structure, and all the observed diffraction peaks correspond to the hexagonal phase with the space group P6(3)/mmc, which is isostructural to pure lutetium borate LuBO3. Annealing of these samples at T = 970A degrees C leads to a change in the structural modification and to the transition of the samples to the monoclinic phase with the space group C2/c. It has been found that, after annealing of these samples at temperatures T = 800-970A degrees C, the luminescence intensity of Tb3+ ions upon excitation in the absorption band of Ce3+ ions increases by more than two orders of magnitude and becomes much higher than that in compounds of the same composition, but prepared by high-temperature synthesis. At the same time, annealing of lutetium borate doped only with terbium does not lead to a significant change in the luminescence intensity of Tb3+ ions. The possible reasons for a multiple increase in the luminescence intensity of terbium ions due to the annealing of the hydrothermally synthesized lutetium orthoborate samples doped with cerium and terbium ions have been discussed.
机译：研究了通过水热合成方法制备的Lu1-X-Y Ce（x）Tb（y）Bo3固溶体的结构，IR吸收光谱，形态和光致发光光谱特性。根据X射线粉末衍射数据，Lu1-xy ce（x）tb（y）Bo3样品在温度T = 200a C的温度下合成的样品具有Vaterite结构，并且所有观察到的衍射峰对应于六边形相空间组P6（3）/ MMC，这是纯储备硼酸盐液Lubo3。在T = 970A℃下对这些样品的退火导致结构改性的变化和用空间组C2 / C的样品转变为单核相的转变。已经发现，在温度下的温度下退火这些样品T = 800-970A C时，CE3 +离子的吸收带中的吸收带中的TB3 +离子的发光强度增加了超过两个数量级，并且变得远高于此在相同的组合物中，但通过高温合成制备。同时，仅掺杂铽的硼酸盐的退火不会导致Tb3 +离子的发光强度的显着变化。已经讨论了由于掺杂有铈和铽离子的水热合成的乳酸盐样品的退火引起的铽离子的发光强度的可能原因。

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  • 来源
    《Physics of the solid state》 |2017年第6期|共12页
  • 作者

    Shmurak S. Z.; Kedrov V. V.; Kiselev A. P.; Fursova T. N.; Rybchenko O. G.;

  • 作者单位

    Russian Acad Sci Inst Solid State Phys Ul Akad Osipyana 2 Chernogolovka 142432 Moscow Oblast Russia;

    Russian Acad Sci Inst Solid State Phys Ul Akad Osipyana 2 Chernogolovka 142432 Moscow Oblast Russia;

    Russian Acad Sci Inst Solid State Phys Ul Akad Osipyana 2 Chernogolovka 142432 Moscow Oblast Russia;

    Russian Acad Sci Inst Solid State Phys Ul Akad Osipyana 2 Chernogolovka 142432 Moscow Oblast Russia;

    Russian Acad Sci Inst Solid State Phys Ul Akad Osipyana 2 Chernogolovka 142432 Moscow Oblast Russia;

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  • 正文语种 eng
  • 中图分类 固体物理学;
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