Table 1. The 〈ρ*〉 formal dislocation-density values obtained for the as-received, heat treated for 24 h and heat treated for 200 h at 260 ± 10°C samples, at reflections (0002) and .

Values obtained from both the v ₂(q) and v ₄(q) restricted moments are given.

〈ρ*〉 (1014 m−2)	v 2 (0002)	v 4 (0002)	v 2	v 4
As received	29	26	30	29
Heat treated for 24 h	16	15	22	21
Heat treated for 200 h	9	8.6	12	12