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Composition And Local Bonding In Re-si-m-o-n (m = Mg, Al ; Re = La, Lu) Glasses

机译:Re-si-m-o-n(m = Mg,Al; Re = La,Lu)玻璃的组成和局部键合

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摘要

Two series of oxynitride glasses, RE-Si-Mg-O-N (M = Mg, Al ; RE = La, Lu), have been studied by X-Ray photoelectron spectroscopy (XPS). The oxygen Is photoelectron lineshape reveals a striking difference depending on the rare earth, both in the Mg series and in the Al series. Specifically, the oxygen Is photoelectron lines of the La doped glasses are broader than the ones of the Lu doped glasses. This result is an experimental evidence that Lu has a larger affinity for oxygen versus nitrogen than La, as theoretically predicted by the first-principles calculations by Painter et al.
机译:通过X射线光电子能谱(XPS)研究了两个系列的氧氮化物玻璃,RE-Si-Mg-O-N(M = Mg,Al; RE = La,Lu)。在镁系列和铝系列中,氧是光电子线形都显示出惊人的差异,这取决于稀土。具体而言,La掺杂的玻璃的氧Is光电子线比Lu掺杂的玻璃的Is光电子线宽。这一结果是实验证据,正如Painter等人的第一性原理计算理论预测的那样,Lu对氧与氮的亲合力比对La具有更大的亲和力。

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