Structural and electronic properties of magnesium-3D transition metal switchable mirrors
Structural and electronic properties of magnesium-3D transition metal switchable mirrors
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DOI：
10.1016/j.ssi.2003.08.041
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发表时间：
2003-12-01
影响因子：
3.2
通讯作者：
Rubin, MD
中科院分区：
文献类型：
--
作者：
Farangis, B;Nachimuthu, P;Rubin, MD
我们在各种含有镁和第一行过渡元素（包括 Ni、Fe、Co、Mn 和 Ti）的混合金属薄膜中观察到可逆的镜面态到透明态的转换。在这些薄膜中加入氢后，反射率和透射率发生巨大变化，并伴随着显着的结构和电子转变。使用动态原位透射模式 X 射线吸收光谱跟踪氢负载过程中金属原子的价态和配位。时间分辨的 Mg K 边和 Ni、Co、Mn 和 Ti L 边光谱反映了金属环境中可逆和不可逆的变化。将这些光谱与参考材料的光谱以及计算预测进行比较。 (C) 2003 Elsevier B.V. 保留所有权利。
We have observed reversible mirror-to-transparent state switching in a variety of mixed metal thin films containing magnesium and first-row transition elements including Ni, Fe, Co, Mn, and Ti. The very large changes in both reflectance and transmittance on loading these films with hydrogen are accompanied by significant structural and electronic transformations. The valence states and coordination of metal atoms during hydrogen loading were followed using dynamic in situ transmission-mode X-ray absorption spectroscopy. Time-resolved Mg K-edge and Ni, Co, Mn, and Ti L-edge spectra reflect both reversible and irreversible changes in the metal environments. These spectra are compared to those of reference materials and to predictions from calculations. (C) 2003 Elsevier B.V. All rights reserved.