Mechanical relaxation of some tellurovanadate glasses
Source abstract
Abstract
Abstract The ultrasonic relaxation process of ZnO–TeO 2 –V 2 O 5 and CeO 2 –TeO 2 –V 2 O 5 glasses was investigated in terms of the central force model of acoustically active two-well systems. The theoretical treatment of the vibrations of two-well systems revealed that, the equilibrium interatomic separation, the number of loss centers and the activation energy are affected with the mutual potential energy of the studied glasses. The number of loss centers is related to the compositional dependence of the elastic moduli and the average ring diameter. The results showed that degree of elongation or contraction of the two-well system depends on the concentration of CeO 2 or ZnO. The theoretically determined longitudinal and transverse deformation potentials due to the acoustic loss produced by two-well systems decrease with the increase of ZnO/CeO 2 content.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Pigment Synthesis and Properties · Optical and Acousto-Optic Technologies
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References (28)
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