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Abstract
The changes in situ in Raman spectra of ice in aqueous KOH solution as a function of pressure at liquid nitrogen temperature (77 K) have been examined. The possibility that the ice in aqueous KOH directly transforms to the low-temperature ice IX phase at around 1 GPa, not via high-density amorphous ice, is shown. Also, it is reported that the results show differences strongly depend on the salts dissolved in the aqueous solutions.
Acknowledgements
The author would like to acknowledge Dr R.J. Hemley for useful discussions and Y. Muramatsu for providing experimental assistance.