Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1998-09-18
Journal of Non-Crystalline Solids 210 (1997) 298-305
Physics
Condensed Matter
Disordered Systems and Neural Networks
15 pages, LateX; (rk@ccr.jussieu.fr), (mmi@ccr.jussieu.fr)
Scientific paper
We give a simple demonstration of the formula relating the glass transition temperature, $T_g$, to the molar concentration $x$ of a modifier in two types of glasses: binary glasses, whose composition can be denoted by $X_nY_m+xM_pY_q$, with ^$X$ an element of III-rd or IV-th group (e.g. B, or Si, Ge), while $M_pY_q$ is an alkali oxide or chalcogenide; next, the network glasses of the type $A_xB_{1-x}$, e.g. $Ge_xSe_{1-x}$, $Si_xTe_{1-x}$, etc. After comparison, this formula gives an exact expression of the parameter $\beta$ of the modified Gibbs-Di Marzio equation.
Kerner Richard
Micoulaut Matthieu
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