| Germanium, Ge | |
|---|---|
| Categories: | MetalNonferrous MetalOther Engineering MaterialSemiconductorPure 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 to Excel (requires Excel and Windows)
Add to Folder: | |
Export data to your CAD/FEA program| 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 | LI | |||
| 9.9646 Å | 9.9646 Å | LII | |||
| 10.2277 Å | 10.2277 Å | LIII | |||
| 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.
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.