Raman spectra of proton order of thin ice Ih film

Publisher: John Wiley & Sons Inc

E-ISSN: 1097-4555|46|4|388-391

ISSN: 0377-0486

Source: JOURNAL OF RAMAN SPECTROSCOPY, Vol.46, Iss.4, 2015-04, pp. : 388-391

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Abstract

The polarized Raman spectra of the upper part of a thin ice Ih film were obtained in the range of 150 cm−1 to 3800 cm−1. The spectra showed clear polarization dependence; several new peaks were also observed. The longitudinaloptic–tranverseoptic (LO–TO) splitting of the mode near 220 cm−1 in the translational vibration region was experimentally confirmed at 133 K. The Fermi resonance between the bending overtone (around 3270 cm−1) and symmetry stretching fundamental (around 3350 cm−1) in the stretching vibration region appeared at nearly the same temperature. Results showed that ice XI (i.e. proton‐ordered phase of ice Ih) slowly formed in the upper part of a thin ice Ih film without KOH as the temperature gradually decreased below 133 K. Copyright © 2015 John Wiley & Sons, Ltd.