Table 1 Visibility (+)/extinction (−) of dislocation contrast and g·b of dislocations 1–7 in Fig. 3 for different g
Two-beam condition | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
(000–2) |g·b| | + 2 | + 2 | + 2 | + 2 | + 2 | + 2 | − 0 |
(1–210) |g·b| | − 0 | + 2 | + 2 | + 2 | + 2 | + 2 | + 1 |
(1–100) |g·b| | − 0 | + 1 | + 1 | + 1 | + 1 | + 1 | − 0 |
Burgers vector | [0001] | \(1/3\left[ {1\overline{2} 13} \right]\) \(1/3\left[ {1\overline{2} 1\overline{3} } \right]\) | \(1/3\left[ {1\overline{2} 13} \right]\) \(1/3\left[ {1\overline{2} 1\overline{3} } \right]\) | \(1/3\left[ {1\overline{2} 13} \right]\) \(1/3\left[ {1\overline{2} 1\overline{3} } \right]\) | \(1/3\left[ {1\overline{2} 13} \right]\) \(1/3\left[ {1\overline{2} 1\overline{3} } \right]\) | \(1/3\left[ {1\overline{2} 13} \right]\) \(1/3\left[ {1\overline{2} 1\overline{3} } \right]\) | \(1/3\left[ {11\overline{2} 0} \right]\) |
Dislocation type | Screw | Mixed | Mixed | Mixed | Mixed | Mixed | Edge |