Effect of Rare Earth Doped Elements and Characterization of LaF_3:Ln~(~(3+)) (Ln~(3+)= Ce~(3+), Pr~(3+), Nd~(3+)) Nanocrystais

机译：稀土掺杂元素的影响及LaF_3：Ln〜（〜（3+））（Ln〜（3 +）= Ce〜（3+），Pr〜（3+），Nd〜（3+））纳米晶体

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LaF_3 nanocrystais doped with lanthanides like Ce~(3+), Pr~(3+) and Nd~(3+) have been prepared using microwave technique. These synthesized crystals have been characterized by X-ray powder diffraction. Well dispersed, elongated, nanorods of hexagonal geometry (approximately 20nm in size) have been found in TEM analysis. The average particle size estimated from XRD analysis is about 20 nm. Similar results for the average size are observed from TEM studies. Four characteristic peaks one at 3434 cm~(-1) (broad) and other at 2924, 2853, 1632 cm~(-1)(sharp) have been observed in the FTIR spectra. Intense Blue colour (458 nm) emission has been recorded when crystals are excited with photons of wavelength 254 nm. Non Linear Optical (NLO) properties of the synthesized nanocrystais have been studied. It has been found that second harmonic generation (SHG) efficiency of the prepared samples containing rare earth elements is less than pure Potassium dihydrogen phosphate (KDP) crystals.

机译：使用微波技术制备掺杂有镧系元素，如CE〜（3+），PR〜（3+）和ND〜（3+）的LAF_3纳米晶体。这些合成的晶体的特征在于X射线粉末衍射。在TEM分析中发现了良好的分散，细长，六边形几何形状的纳米棒（大约20nm）。从XRD分析估计的平均粒度约为20nm。从TEM研究观察到类似的平均大小的结果。在FTIR光谱中，已经观察到在2924,2853,1632cm〜（尖锐）的3434cm〜（-1）（宽）等的四个特征峰。当晶体与波长254nm的光子激发晶体时，已经记录了强烈的蓝色（458nm）发射。已经研究了合成的纳米晶体的非线性光学（NLO）性质。已经发现，含有稀土元素的制备样品的二次谐波产生（SHG）效率小于纯磷酸二氢钾（KDP）晶体。

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《International Conference on Advanced Materials Processing - Challenges and Opportunities》|2012年||共5页
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S G Gaurkhede; M M Khandpekar; AT Singh;
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中图分类 TB3-532;
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Inorganic elements; Nanorods; X-RAY; IR; TEM; Luminescent materials;

机译：无机元素;纳米棒;X射线;IR;TEM;发光材料;

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Effect of Rare Earth Doped Elements and Characterization of LaF_3:Ln~(~(3+)) (Ln~(3+)= Ce~(3+), Pr~(3+), Nd~(3+)) Nanocrystais

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