Deuteration-Induced Phase Transition in Chromous Acid DCrO2

Deuteration-Induced Phase Transition in Chromous Acid DCrO2

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...

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Bibliographic Details
Published in:Ferroelectrics Vol. 346; no. 1; pp. 149 - 155
Main Authors: Maekawa, T., Yamamuro, O., Inaba, A., Matsuo, T., Ohama, M., Ichikawa, M., Tsuchida, T.
Format: Journal Article
Language:English
Published: Taylor & Francis Group 26-03-2007
Subjects:
Chromous acid
DCrO
deuteration-induced phase transition
HCrO
hydrogen bond
infrared spectra
the Evans effect
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Summary: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.
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ISSN:0015-0193
1563-5112
DOI:10.1080/00150190601182444