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Three steps of acoustic relaxation in (AgI)x(Ag4P2O7)1−x glass melts

1994; Elsevier BV; Volume: 68; Issue: 1-2 Linguagem: Inglês

10.1016/0167-2738(94)90238-0

1872-7689

Akihiro Doi, Hisao Hayakawa, Hiroaki Kamioka,

Phase-change materials and chalcogenides

Abstract Ultrasonic study over glass transition temperature was made on two fast-ion conducting glasses, (AgI) x (Ag 4 P 2 O 7 ) 1− x with x = 0.75 and 0.80, in the temperature range of room temperature to 200°C. Ultrasonic velocity dispersion and the attenuation peak suggest the presence of three different phases, rather than two, for the supercooled liquid of these glasses. They are tentatively assigned as the AgI-rich phase, the Ag 4 P 2 O 7 -rich phase, and the AgI Ag 4 P 2 O 7 mixed phase.