Infrared and Raman spectral interpretations of the ferroelectric phases of NaH3(SeO3)2 and NaD3(SeO3)2 |
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Authors: | CA Cody RC Levitt RK Khanna Philip J Miller |
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Institution: | Chemistry Department, University of Maryland, College Park, Maryland 20742 USA;Department of Chemistry, University of Detroit, Detroit, Michigan 48221 USA |
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Abstract: | The infrared and Raman spectra of NaH3(SeO3)2 and NaD3(SeO3)2 have been recorded from 24 to 300°K. The interpretation, assignments, and analysis of the spectral studies are presented on the paraelectric α phase (proton disordered), ferroelectric β phase (proton ordered) and ferroelectric γ phase (proton ordered). A discussion of a newly proposed proton-triggered phase transition mechanism and a possible origin of the hydrogen-bonded OH stretching region of KH2PO4-type ferroelectrics is given. |
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