|Title:||Acoustic Evidence of Phase Separation in Lithium Silicate Glasses||Authors:||Lin, M.J.
|Issue Date:||Jun-1990||Publisher:||臺北市:國立臺灣大學物理系所||Journal Volume:||Vol. 28||Journal Issue:||No. 3||Start page/Pages:||-||Source:||Chinese Journal of Physics||Abstract:||
Ultrasonic measurements of a series of Liz 0-xSiOa (x = 1-6) glass samples are presented.
In terms of the model of frozen-in thermal fluctuations in glasses, the analysis of the relationship
of temperature coefficient of ultrasonic velocity change versus Liz0 molar fraotion provides
evidence of the existence of two-phase separation phenomenon in lithium silicate glasses
with a molar fraction of lithium oxide less than 0.25. It also provides some information about
the structural change of the glasses from a system of two phases to a single phase, as the molar
fraction of Liz0 is further increased.
|Appears in Collections:||物理學系|
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