Abstract
The temperature dependence of the extra-thermoelectric power of gold and platinum after quenching or after plastic deformation was measured in the temperature range from −190°C to 20°C. It was found that dislocations raise the absolute thermoelectric power of gold, whereas vacancies reduce it. In platinum both kinds of defects reduce the absolute value of the thermoelectric power in the whole range of temperatures.
Gold was quenched from different temperatures into water and the change of electrical resistivity and of thermoelectric power was simultaneously measured. The extra-thermoelectric powerΔS varies directly with the concentration of vacancies. Its value is given by the relationΔS/c=−1·08 μV/(grad at. % vac.) The activation energy of the formation of lattice vacancies in gold wasE F =(0·93±0·14) eV.
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The analysis of the experimental results was carried out at this institute.
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Polák, J. Change of absolute thermoelectric power of gold and platinum due to lattice defects. Czech J Phys 14, 176–188 (1964). https://doi.org/10.1007/BF01688837
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DOI: https://doi.org/10.1007/BF01688837