Polarization-dependent EXAFS measurements of an α-molybdenum trioxide single crystal
Polarization-dependent EXAFS measurements of an α-molybdenum trioxide single crystal
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DOI：
10.1023/a:1013801531939
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发表时间：
2002-01-01
影响因子：
3.6
通讯作者：
Asakura, K
中科院分区：
文献类型：
--
作者：
Ijima, K;Ohminami, Y;Asakura, K
我们观察了α - moo3单晶的偏振依赖的XAFS。XANES光谱随极化方向变化，1s -> - 4d前边峰是Mo=O（双键氧）键方向的良好指示。在偏振相关的EXAFS光谱的傅里叶变换中，可以清楚地分辨出0.175、0.195和0.223 nm处的三个Mo-O键长。基于基于EXAFS光谱的相移函数和振幅函数，对粉末MoO3光谱进行了曲线拟合分析。
We observed the polarization-dependent XAFS of an alpha-MoO3 single crystal. Polarization-dependent XANES spectra change with the polarization direction and the 1s --> 4d pre-edge peak is shown to be a good indicator for the Mo=O (double bond oxygen) bond direction. The three Mo-O bond lengths at 0.175, 0.195 and 0.223 nm can clearly be distinguished in the Fourier transforms of polarization-dependent EXAFS spectra. Curve-fitting analysis was carried out on a powder MoO3 spectrum based on the phase shift and amplitude functions derived from the polarization-dependent EXAFS spectra.