Unformatted text preview: touching, what is the lattice constant and the volume densities of atoms A and B. If the crystal is formed with atoms B at the corners and atom A at the center, what is the lattice constant and what are the atom densities of atoms A and B? 4.) Consider the (100), (110), and (111) planes of Si. Which plane has the highest surface density of atoms? Which has the smallest surface density? What are those two densities? 5.) Consider the three dimensional simple cubic lattice with a lattice constant a o . a.) Sketch the following planes: (100), (130), (230). b.) Sketch the following directions in the lattice: , , . c.) What is the distance between nearest (111) planes? 6.) Determine the angle between tetrahedral bonds in Si....
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- Spring '07
- Atom, Crystal, Fundamental physics concepts