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Calculate the number of Frenkel defects per cubic meter in zinc oxide at 967 ˚C. The energy for defect formation is 2.51 eV, while the density for ZnO is 5.55 g/cm3 at this temperature.

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Jamar Ferry
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17 Dec 2019

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Related questions

Manganese oxide is a known non-stochiometric compound which takes the form, Mn(1-x)O. A 1 cm3 specimen which contains a high concentration of Mn3+ sites equal to 8.49 x 1020 is kept at room temperature and has enthalpies of formation for Schottky and Frenkel defects of 3.65 eV and 7.86eV respectively.

i) show that any additional vacancies at room temperature are negligble (assume stochiometric). Only one calculation for the most prevalent defect is necessary.

ii) Calculate the value of x and write out the chemical formula of this compound

Please help me figure out this problem.


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