Anomalies of the baric and temperature dependences of the elastic characteristics of ice during solid-phase amorphization and the phase transition in the amorphous state |
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Authors: | E. L. Gromnitskaya O. V. Stal’gorova V. V. Brazhkin |
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Affiliation: | (1) L. F. Vereshchagin Institute of High-Pressure Physics, Russian Academy of Sciences, 142092 Troitsk, Moscow Region, Russia |
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Abstract: | The elastic characteristics of ice up to pressures of 1.7 GPa are determined for the first time at a temperature of 77 K, along with features of their variation associated with the phase transformation of hexagonal ice Ih into high-density amorphous ice hda. The elastic instability of the ice lattice before solid-phase amorphization is experimentally confirmed. Elastic instability during a transition from one amorphous state to another amorphous state was also observed for the first time; this took place when hda ice was warmed at p=0.05 GPa from T=77 K. Zh. éksp. Teor. Fiz. 112, 200–208 (July 1997) |
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