Equations 8.1a and 8.1b, expressions for Burgers vectors for FCC and BCC crystal structure...

Equations 8.1a and 8.1b, expressions for Burgers vectors for FCC and BCC crystal structures, respectively, are of the form

where a is the unit cell edge length. The magnitudes of these Burgers vectors may be determined from the following equation:

Determine the values of |b| for aluminum and chromium. You may want to consult Table 3.1.

Table 3.1 Atomic Radii and Crystal Structures for 16 Metals

 (8.1a)

 (8.1b)