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首页> 外文期刊>Crystal growth & design >PrAlO3-PrAl11O18 eutectic: Its microstructure and spectroscopic properties
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PrAlO3-PrAl11O18 eutectic: Its microstructure and spectroscopic properties

机译：PrAlO3-PrAl11O18共晶：其微观结构和光谱性质

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摘要

The praseodymium aluminum perovskite-praseodymium hexaluminate (PrAlO3-PrAl11O18) eutectic has been studied for the first time. It has been grown by the micro-pulling down method from a composition of 20.7% Pr2O3 and 79.3% Al2O3. The PrAlO3-PrAl11O18 eurectic tends to grow as a fibrous microstructure, with the PrAlO3 phase forming microfibers that are packed in a matrix of the PrAl11O18 phase. The eutectic has been grown with different pulling rates (p.r.'s): 0.15, 0.3, 0.45, 1, and 5 mm/min. The smallest microfibers were obtained with p.r. = 5 mm/min and are 300 nm in diameter. To the authors' best knowledge, this is the first report of the crystalline phase of PrAl11O18. The absorption and luminescence spectra of the eutectic are presented. The fibrous/rodlike eutectic self-organized structure obtained in this work has the potential for application in modem photonics in the field of photonic crystals and/or metamaterials.
机译：钙钛矿型-铝-六铝酸pr（PrAlO3-PrAl11O18）的共晶是首次研究。它是通过微拉法从20.7％的Pr2O3和79.3％的Al2O3组成的。 PrAlO3-PrAl11O18共晶体趋于以纤维微结构的形式生长，其中PrAlO3相形成微纤维，堆积在PrAl11O18相的基质中。共晶以不同的拉速（p.r.）生长：0.15、0.3、0.45、1、5 mm / min。用p.r.获得最小的微纤维。 = 5 mm / min，直径为300 nm。据作者所知，这是PrAl11O18结晶相的首次报道。给出了共晶的吸收光谱和发光光谱。在这项工作中获得的纤维/棒状共晶自组织结构具有在光子晶体和/或超材料领域中应用于现代光子学的潜力。

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