Wires of silver, gold, and copper and some silver-copper and silver-gold alloys were stretched at room temperature, -80Β°C and at the liquid air point. The change of resistivity was determined as well as the recovery of resistivity on warming from the low temperatures to room temperature. The silver-
The influence of plastic deformation on the transverse magnetoresistance of polycrystalline copper, silver and gold
β Scribed by P Jongenburger
- Publisher
- Elsevier Science
- Year
- 1961
- Weight
- 779 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0001-6160
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β¦ Synopsis
The transverse magnetoresistance of annealed and of plastically deformed wires of copper, silver and gold was measured at 20Β°K and 14Β°K. When the results are plotted in a Kohler diagram, the deformed rnat,erial yields a curve which is in general shifted with respect to the curve for the annealed metal. This shift is shown to be temperature dependent; both positive and negative shifts have been found.
π SIMILAR VOLUMES
It is found that small amounts of plastic deformation greatly enhance the rate of annealing in gold quenched from 700Β°C. It is found that the activation energy of motion before deformation is 0.82 eV, whereas after deformation it is 0.64 f 0.03 eV. Using the theory of Cochardt et &.'\*I it is shown
iV (9) oc a, CL' and a$ being the thermal expansion coefficients (assumed to be independent of temperature) of a perfect crystal, a crystal containing a vacancy and a crystal containing a saddle point configuration respectively.
the diffusion coefficient of vacancies, which he thought Eindhoven, Netherkmds. to become mobile in this temperature range.
The influence of bromine adsorption on copper electrodeposition on a polycrystalline gold electrode modified with self-assembled monolayers (SAMs) has been investigated by chronoamperometry and cyclic voltammetry. It was found that the deposition potential of copper was shifted negatively due to the