Germanium, Ge

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Germanium, Ge
Categories:	Metal; Nonferrous Metal; Other Engineering Material; Semiconductor; Pure Element
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Categories:

Metal; Nonferrous Metal; Other Engineering Material; Semiconductor; Pure Element

Vendors:

Click here to view all available suppliers for this material.

Please click here if you are a supplier and would like information on how to add your listing to this material.

Printer friendly version

Download as PDF

Download to Excel (requires Excel and Windows)

Export data to your CAD/FEA program

Add to Folder:

Physical Properties	Metric	English	Comments

Density	5.3234 g/cc	0.19232 lb/in³
a Lattice Constant	5.65754 Å	5.65754 Å
Volume Compressibility, 10^-10 m²/N	0.768	0.768

Chemical Properties	Metric	English	Comments
Atomic Mass	72.61	72.61	1995
Atomic Number	32	32
Thermal Neutron Cross Section	2.5 barns/atom	2.5 barns/atom
X-ray Absorption Edge	1.116 Å	1.116 Å	K
	8.729 Å	8.729 Å	L_I
	9.9646 Å	9.9646 Å	L_II
	10.2277 Å	10.2277 Å	L_III
Electronegativity	2.01	2.01	Pauling
Ionic Radius	0.530 Å	0.530 Å	Crystal Ionic Radius for Valence +4
	0.730 Å	0.730 Å	Crystal Ionic Radius for Valence +2
	2.72 Å	2.72 Å	Crystal Ionic Radius for Valence -4

Mechanical Properties	Metric	English	Comments
Knoop Microhardness	7644	7644	N/mm² Microhardness
Modulus of Elasticity	130 GPa	18900 ksi	Average of three axes
Poissons Ratio	0.30	0.30	Calculated
Shear Modulus	50.0 GPa	7250 ksi	Average of three axes.

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000500 ohm-cm	0.0000500 ohm-cm
Magnetic Susceptibility	-1.20e-7	-1.20e-7	Atomic (cgs)
Critical Superconducting Temperature	5.35 K	5.35 K	at 11.5 GPa pressure.
Dielectric Constant	16	16
Band Gap	0.67 eV	0.67 eV
Electron Mobility, cm²/V-s	3800	3800
Hole Mobility, cm²/V-s	1820	1820

Thermal Properties	Metric	English	Comments
Heat of Fusion	478 J/g	206 BTU/lb
Heat of Vaporization	3345 J/g	1439 BTU/lb
CTE, linear	6.10 µm/m-°C @Temperature 20.0 °C	3.39 µin/in-°F @Temperature 68.0 °F
Specific Heat Capacity	0.3219 J/g-°C	0.07694 BTU/lb-°F
Thermal Conductivity	64.0 W/m-K	444 BTU-in/hr-ft²-°F
Melting Point	937.4 °C	1719 °F
Boiling Point	2833 °C	5131 °F
Heat of Formation	291 kJ/mol	291 kJ/mol
Debye Temperature	101 °C	214 °F

Optical Properties	Metric	English	Comments
Refractive Index	3.99	3.99

Component Elements Properties	Metric	English	Comments
Germanium, Ge	100 %	100 %

Descriptive Properties
CAS Number	7440-56-4
Crystal Structure	Cubic		Diamond Structure - Space Group Fd3m

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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