Deuteration-Induced Phase Transition in Chromous Acid DCrO2
Deuteration-Induced Phase Transition in Chromous Acid DCrO2
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DOI：
10.1080/00150190601182444
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发表时间：
2007-03
期刊：
影响因子：
0.8
通讯作者：
T. Maekawa;O. Yamamuro;A. Inaba;T. Matsuo;M. Ohama;M. Ichikawa;T. Tsuchida
中科院分区：
文献类型：
--
作者：
T. Maekawa;O. Yamamuro;A. Inaba;T. Matsuo;M. Ohama;M. Ichikawa;T. Tsuchida
用红外光谱研究了DCrO 2在320 K时发生的相变，而HCrO 2在320 K时没有发生相变.氢键弯曲振动对相变敏感，在相变温度处峰频率随温度变化剧烈。Cr-O振动区对温度也很敏感。DCrO 2在320 K以下出现在434 cm− 1处的吸收峰的强度和带宽已被仔细检查。通过对谱形函数的分析，研究了光谱中的色散异常现象（埃文斯-法诺效应）。
A phase transition occurring at 320 K in DCrO 2 but not in HCrO 2 has been investigated by infrared spectroscopy. The hydrogen bond bending vibration is sensitive to the phase transition, the peak frequency changing sharply with temperature at the transition temperature. The Cr-O vibration region is also sensitive to temperature. The absorption peak occurring at 434 cm− 1 for DCrO 2 .below 320 K has been examined closely with respect to the intensity and band width. Dispersion-like anomalies in the spectra (the Evans-Fano effect) have been studied by analysis of the spectral shape function.