Mechanical relaxations of (AgI) x(Ag 4P 2O 7) 1− x glasses in the temperature range from – 150 to 200°C

• Published in: Solid state ionics Vol. 73; no. 3; pp. 241 - 245
• Main Authors: Doi, A., Kawasaki, O., Itoh, Y.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 1994; Elsevier Science
• Subjects: Acoustical properties of liquids; Ag + conduction; Condensed matter: structure, mechanical and thermal properties; Diffusion in solids; Exact sciences and technology; Glassy electrolytes; Mechanical and acoustical properties of condensed matter; Mechanical relaxation; Phosphate glasses; Physics; Self-diffusion and ionic conduction in nonmetals; Silver iodide; Transport properties of condensed matter (nonelectronic); Ag + conduction; Phosphate glasses; Silver iodide; Mechanical relaxation; Glassy electrolytes; Ionic conductivity; Binary systems; Phosphate glass; Experimental study; Sound velocity; Silver iodides; Relaxation; Silver phosphates; Quantity ratio; Wave propagation; Temperature effects; Glass transformations; Attenuation; Anomaly
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/0167-2738(94)90040-X

Temperature range of the previous ultrasonic study on (AgI) x (Ag 4P 2O 7) 1− x glasses, from room temperature to 20 C (Phys. Rev. B47 (1993) 14136), was extended down to – 150°C. From the study we could compare two sound anomalies, one by the relaxation of the mobile Ag + ions originating from the AgI microdomain in the glass, and another by the relaxation of the mobile species in the supercooled liquid after glass transition. It was found that the anomalies shifted to lower temperatures in near parallel with the glass transition temperature as x was increased from 0.6 to 0.8. The attenuation peak in the high-temperature anomaly was sharper than the low-temperature counterpart, possibly by the averaging effect of the hindrances against motion of the relevant species due to rapid motion of the surroundings.