论文标题
Tungstates实心溶液Zncni1-CWO4的X射线吸收和拉曼光谱研究（C = 0.0-1.0）
X-ray absorption and Raman spectroscopy studies of tungstates solid solutions ZncNi1-cWO4 (c=0.0-1.0)
论文作者
论文摘要
使用温度依赖性（10-300 K）X射线吸收光谱（XAS）在W L3-EDGE的温度依赖性（10-300 K）X射线吸收光谱（XAS）研究了tungstates Zncni1-CWO4微晶固体溶液中的热障碍和静态扭曲对局部结构的影响。另外，通过拉曼光谱研究了实体溶液的振动特性。我们的结果表明，固体溶液的形成伴随着强大的结构弛豫，导致[WO6]八面体畸变的变化，这反过来影响了钨的振动特性。特别是，遵循XAS揭示的局部结构修改，在约900 cm-1处最高W-O拉伸模式的频率和带宽显示出不同的组成依赖性。
The influence of thermal disorder and static distortions on the local structure in microcrystalline solid solutions of tungstates ZncNi1-cWO4 with c=0.0-1.0 was investigated using temperature-dependent (10-300 K) x-ray absorption spectroscopy (XAS) at the W L3-edge. In addition, the vibrational properties of the solid solutions were studied by Raman spectroscopy. Our results indicate that the formation of solid solutions is accompanied by strong structural relaxations leading to the changes in the [WO6] octahedra distortions, which, in turn, affect the vibrational properties of tungstates. In particular, the frequency and band width of the highest W-O stretching mode at about 900 cm-1 show distinct composition dependence, following the local structure modifications as revealed by XAS.
