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Difference between revisions of "resistivity"
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Although considered to be a fundamental property of a material, the resistivity of the material depends on the operating conditions such as the [[temperature]]. | Although considered to be a fundamental property of a material, the resistivity of the material depends on the operating conditions such as the [[temperature]]. | ||
| + | == Common Resistivity == | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | ! colspan="4" | Resistivity and [[mean free time|Mean Free Time]]/[[mean free path|Path]] (at room temp) | ||
| + | |- | ||
| + | ! Element !! ρ (µΩ·cm) !! τ (fs) !! λ (nm) | ||
| + | |- | ||
| + | | Copper || 1.678 || 36 || 39.9 | ||
| + | |- | ||
| + | | Aluminum || 2.65 || 11.8 || 18.9 | ||
| + | |- | ||
| + | | Tungsten || 5.28 || 16 || 15.5 | ||
| + | |- | ||
| + | | Cobalt || 6.2 || 21.2/17.6 || 11.8/7.77 | ||
| + | |- | ||
| + | | Ruthenium || 7.8 || 8.82/7.07 || 6.59/4.88 | ||
| + | |- | ||
| + | | Indium || 8.8 || 5.27/5.05 || 8.65/8.16 | ||
| + | |- | ||
| + | | colspan="4" style="font-size: small;" | Reference Gall, D. (2016) | ||
| + | |} | ||
| − | + | == Bibliography == | |
| + | * Gall, D. (2016). Electron mean free path in elemental metals. Journal of Applied Physics, 119(8), 085101. doi:10.1063/1.4942216 | ||
Revision as of 21:02, 5 August 2018
Resistivity (ρ) is a property that quantifies the material's oppoistion to the flow of current.
Overview
Resistivity is the inverse of conductivity which quantifies the material's ability to transport electric charge. Resistivity is measured in ohm meters or centimeters (Ω cm or Ω m).
The resistivity of a material can be derived from the equation for resistance:
Variability
Although considered to be a fundamental property of a material, the resistivity of the material depends on the operating conditions such as the temperature.
Common Resistivity
| Resistivity and Mean Free Time/Path (at room temp) | |||
|---|---|---|---|
| Element | ρ (µΩ·cm) | τ (fs) | λ (nm) |
| Copper | 1.678 | 36 | 39.9 |
| Aluminum | 2.65 | 11.8 | 18.9 |
| Tungsten | 5.28 | 16 | 15.5 |
| Cobalt | 6.2 | 21.2/17.6 | 11.8/7.77 |
| Ruthenium | 7.8 | 8.82/7.07 | 6.59/4.88 |
| Indium | 8.8 | 5.27/5.05 | 8.65/8.16 |
| Reference Gall, D. (2016) | |||
Bibliography
- Gall, D. (2016). Electron mean free path in elemental metals. Journal of Applied Physics, 119(8), 085101. doi:10.1063/1.4942216