# HW2 - o C The energy for vacancy formation is 0.98 eV/atom...

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ECE331 Homework #2 (Due Friday, 4/11/2008) 1. Determine the indices for the directions shown in the following cubic unit cell. 2. Determine the miller indices for the planes shown in the following unit cell

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3. Determine the indices for the planes shown in the hexagonal unit cells shown below. 4. Calculate and compare the linear densities of the [100], [110], and [111] directions for FCC. 5. Calculate the planar density of the (0001) plane for HCP. 6. List all the crystal planes of {110} family in cubic crystals. 7. Calculate the number of vacancies per cubic meter in gold at 900
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Unformatted text preview: o C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 19.32 g/cm 3 and 196.9 g/mol, respectively. 8. Give some examples of zero-dimensional, one-dimensional, two-dimensional, and three-dimensional defects in a semiconductor. 9. a) The surface energy of a single crystal depends on the crystallographic orientation with respect to the surface. Explain why this is so. b) For an FCC crystal, such as aluminum, would you expect the surface energy for a (100) plane to be greater or less than that for a (111) plane? Why?...
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## This note was uploaded on 05/05/2010 for the course ECE 331 taught by Professor Rajan during the Spring '09 term at Ohio State.

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HW2 - o C The energy for vacancy formation is 0.98 eV/atom...

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