抄録
Absorption/desorption of small amount of water and its effects on the phase transition at 146K in K2ZnCl4 were studies by FT-IR spectroscopy and adiabatic calorimetry. Existence of water molecule in absorbed crystal was substantiated by FT-IR spectra. It was verified by heat capacity measurements on single crystals of large size that the water is absorbed in the crystal. The reproducibility and reversibility of the absorption/desorption were confirmed by repeating heat/ventilation treatment and exposure of the sample to the laboratory atmosphere.
