University of Pardubice Faculty of Chemical Technology

University

Employees
|
Students
Česky

Publication detail

Viscosity measurements of As-Se chalcogenide glass and its use for determination of crystal growth kinetics

Authors: Vaculík David | Košťál Petr | Včeláková Michaela | Schmidt Markus | Wieduwilt Torsten | Barták Jaroslav

Year: 2024

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Viscosity measurements of As-Se chalcogenide glass and its use for determination of crystal growth kinetics	Viscosity is a material property which defines how well the material flows. Its knowledge is very important, especially for glassy materials. The crystal growth kinetics is also influenced by viscosity. The diffusion of structural units to the crystal-glass interface is usually very hard or impossible to measure, but it can be replaced by the Stokes-Einstein equation, which correlates diffusion with viscosity. Also, the kinetic crystal growth models are viscosity-dependent, making the knowledge of rheological properties essential. Our study group, the M´alek Research Group, have been interested in the viscosity measurement for a long time, and we’ve been trying to describe the viscosity of various noncrystalline materials in a broad range of temperatures, from the melted material and undercooled melts to amorphous glass. We’ve been using many different experimental techniques to achieve that, some of which are introduced in the presented study. The use of these techniques will be demonstrated on an As-Se glassy system.	Viscosity; As-Se; glass; crystal growth; kinetics