Determine the magnitude of the Burger’s vector in MgO, shown in Figure 3.10, that has the NaCl crystal structure with a lattice parameter of 0.4212 nm, and compare the magnitude of this Burger’s vector to that of copper. Note that the Burger’s vector is in the [110] direction in MgO.

What will be an ideal response?


As shown in Figure 3.10 the Burger’s vector is between lattice points in the [110] direction. In the MgO (NaCl) structure there are lattice points at the face centered cubic positions. Thus the Burgers vector goes from 0, 0, 0 to ½, ½, 0. That distance in the in MgO is equal to





Physics & Space Science

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