(b) Consider the following questions about Schottky defects in a solid with N atoms. (i) The temperature, T, of the soli

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B Consider The Following Questions About Schottky Defects In A Solid With N Atoms I The Temperature T Of The Soli 1 (72.98 KiB) Viewed 14 times

(b) Consider the following questions about Schottky defects in a solid with N atoms. (i) The temperature, T, of the solid is related to the number of defects, M, as 1 - All [- In M + In(N – M)] T E [7 marks] where e is the activation energy of one defect. What is the density of defects in the solid, expressed as a function of temperature and the activation energy? (ii) Consider a crystal of NaCl. This material has a melting temperature of 1073K. The activation energy of a single Schottky defect in NaCl is 2.12 eV. Is it possible for this material to host 1 Schottky defect for every 10 atoms? [6 marks]