Vacancies are a so-called point defect found in all materials. It has an indirect meaning for...

 

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Vacancies are a so-called point defect found in all materials. It has an indirect meaning for the material properties. Among other things, there is a direct linear relationship between the material's yoked electrical resistivity and yoked vacancy concentration. The temperature-dependent resistivity search with data for how large the resistivity contribution from vacancies (4p) is available a) Using these data, calculate the formation energy for one mole of vacancies. b) How high is the vacancy concentration at room temperature in gold? c) How high is the vacancy concentration alleles before the gold melts? Is the value obtained reasonable? Temperatur [C] Ap [cm] 8.1 10-11 1.08 10-10 1.89 10-10 2.41 10-10 6.5 10-10 1.35-10-9 2.15 109 5.9 10-9 1.14-10-8 442 444 486 499 541 589 643 701 782 . . Vacancies are a so-called point defect found in all materials. It has an indirect meaning for the material properties. Among other things, there is a direct linear relationship between the material's yoked electrical resistivity and yoked vacancy concentration. The temperature-dependent resistivity search with data for how large the resistivity contribution from vacancies (4p) is available a) Using these data, calculate the formation energy for one mole of vacancies. b) How high is the vacancy concentration at room temperature in gold? c) How high is the vacancy concentration alleles before the gold melts? Is the value obtained reasonable? Temperatur [C] Ap [cm] 8.1 10-11 1.08 10-10 1.89 10-10 2.41 10-10 6.5 10-10 1.35-10-9 2.15 109 5.9 10-9 1.14-10-8 442 444 486 499 541 589 643 701 782 . .

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a To calculate the formation energy for one mole of vacancies we need to know the enthalpy of format... View the full answer