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Thermopower due to defects in Ni, Pd and Pt

“…This correlates with results of measurements carried out on platinum by Polak [2]. The positive contribution of dislocations to the thermopower of nickel obtained in the works [8,9] is justified in our measurements too. The opposite sign contribution of vacancies to the TEP of nickel in comparison with dislocations discovered in the works [9,10] seems not to be convincing enough, as already noted above.…”

“…Therefore, we can state that the sign of the dislocation-induced thermoelectric effect in nickel is positive; that is, the dislocations reduce the negative absolute thermoelectric power of nickel. This conclusion about the sign of the effect correlates with the results of the works [8,9]. As known, the defect structure of metal determines unambiguously the macroscopic flow stress through the mechanism of work hardening.…”

“…The positive contribution of dislocations to the thermopower of nickel obtained in the works [8,9] is justified in our measurements too. The opposite sign contribution of vacancies to the TEP of nickel in comparison with dislocations discovered in the works [9,10] seems not to be convincing enough, as already noted above. We did not find the experimental data on the contribution of vacancies or dislocations to the thermopower and electrical resistivity of palladium.…”

“…It was found that dislocations and vacancies reduce the absolute value of thermopower. Available experimental results for nickel [8][9][10] allow us to make a conclusion only about a positive sign of the thermoelectric effect induced by plastic deformation. Since the demagnetization of samples was not carried out in these experiments, the authors' attempt to separate a component connected with vacancies seems not to be credible, as the thermoelectric effect induced by deformation is masked by the magnetic hysteresis of the thermoelectric effect.…”

“…The magnetic hysteresis of the thermoelectric effect on pure nickel was investigated in the work [11]. Besides, in the articles [8][9][10] the change of thermopower was not connected with the density of the defects, that complicated the theoretical interpretation of the results.…”