Investigation of XANES study and energy transport phenomenon of Gd~(3+) to Ce~(3+) in CaO-SiO_2-B_2O_3 glasses

Rajaramakrishna R.; Kaewjaeng S.; Kaewkhao J.; Kothan S.

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Investigation of XANES study and energy transport phenomenon of Gd~(3+) to Ce~(3+) in CaO-SiO_2-B_2O_3 glasses

机译：CAO-SiO_2-B_2O_3眼镜XANES研究和XANES研究和能量运输现象的CE〜（3+）

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The gadolinium calcium silico-borate glasses doped with cerium fluoride were synthesized by melt quenching technique. The density (rho) has been measured using Archimedes principle and also molar volume (Vm) has been estimated. The FTIR spectra of these glasses showed mainly of [BO3] and [BO4] structural units. The optical bandgap energy (E-opt) were observed to decrease with the increase in CeF3 content. Polaron radius, inter-ionic radius and oxygen packing density decreases with increase in CeF3 content. Field strength increases with increase in CeF3 content. UV emission at similar to 372 nm was observed which showed complete energy transfer from Gd3+ ions of 315 nm to Ce3+ ions of 372 nm when monitored at 275 nm excitation. A red shift in their emission intensities were observed with addition of CeF3 content. Ce3+ (I) to the six-coordinated site and Ce3+ (II) to the seven-coordinated site were observed in these glasses. X-ray Absorption Near Edge Structure of Ce L-III-edge were investigated and the absorption peak show at similar to 5.728 keV confirming the presence of Ce3+.

机译：通过熔融淬火技术合成掺杂有氟化铈掺杂氟化铈的钆硅硼酸盐玻璃。使用Archimedes原理测量密度（RHO），并且已经估计了摩尔体积（VM）。这些玻璃的FTIR光谱主要显示为[BO3]和[BO4]结构单元。观察到光学带隙能量（E-OPT）以随着CEF3含量的增加而降低。 Polaron半径，离子间半径和氧气填充密度随着CEF3含量的增加而降低。场强随着CEF3含量的增加而增加。观察到类似于372nm的UV发射，当监测在275nm激发时，从315nm的Gd3 +离子的Gd3 +离子的Gd3 +离子的完全能量转移。通过添加CEF3含量，观察到它们排放强度的红色移位。在这些眼镜中观察到六个协调地点和CE3 +（II）的CE3 +（I）。研究了Ce L-III边缘的边缘结构附近的X射线吸收，并且吸收峰表现出类似于5.728keV的确认CE3 +的存在。

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来源
《Optical Materials》 |2020年第4期|109826.1-109826.7|共7页
作者
Rajaramakrishna R.; Kaewjaeng S.; Kaewkhao J.; Kothan S.;
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作者单位

Nakhon Pathom Rajabhat Univ Ctr Excellence Glass Technol & Mat Sci CEGM Muang 73000 Nakhon Pathom Thailand|Natl Coll Autonomous Dept Post Grad Studies & Res Phys 7th Block Jayanagar Bangalore 560070 Karnataka India;

Chiang Mai Univ Fac Associated Med Sci Dept Radiol Technol Ctr Radiat Res & Med Imaging Chiang Mai 50200 Thailand;

Nakhon Pathom Rajabhat Univ Ctr Excellence Glass Technol & Mat Sci CEGM Muang 73000 Nakhon Pathom Thailand;

Chiang Mai Univ Fac Associated Med Sci Dept Radiol Technol Ctr Radiat Res & Med Imaging Chiang Mai 50200 Thailand;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
XRD; FTIR; Optical band gap; XAS;

机译：XRD;FTIR;光带隙;XAS;

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Investigation of XANES study and energy transport phenomenon of Gd~(3+) to Ce~(3+) in CaO-SiO_2-B_2O_3 glasses

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