Si - Silicon

Thermal properties

Bulk modulus 9.8·1011 dyn/cm2
Melting point 1412 °C
Specific heat 0.7 J g-1°C-1
Thermal conductivity 1.3 W cm-1°C-1
Thermal diffusivity 0.8 cm2/s
Thermal expansion, linear 2.6·10-6°C -1


Temperature dependence of lattice parameter
(Yim and Paff [1974]).
Temperature dependence of thermal conductivity for high purity Si.
(Glassbrenner and Slack [1964]).
The dependence of thermal conductivity K versus doping level N at 20K.
p-Si. (Thompson and Younglove [1961]).

For T > 100 K thermal conductivity is practically independent of N.
Temperature dependence of specific heat at constant pressure.
Tm is the melting point.
(Okhotin et al. [1972]).
Temperature dependence of specific heat at low temperatures.
(Flubacher et al. [1959]).
Temperature dependence of thermal diffusivity.
(Shanks et al. [1963]).
Temperature dependence of linear expansion coefficient α.
(Okada and Tokumaru [1984]).
Melting point Tm = 1685 K Tm ≈ 1685 -3.8P (P in kbar)

Saturated vapor pressure (in Pascals)

for 850 °C 2·10-9
for 1100 °C 2·10-5
for 1300 °C 5·10-3