${\theta }^{″}$

$\mathcal{l}$ ± Δ l (nm)

12 ± 0.3 (4)

12 ± 0.2 (4)

ρ ± Δρ (nm⁻³ × 10⁻⁵)

9 ± 0.9

9 ± 0.9

${\theta }^{\prime }$

$\mathcal{l}$ ± $\Delta \mathcal{l}$ (nm)

20 ± 0.3 (7)

28 ± 0.4 (10)

ρ ± Δρ (nm⁻³ × 10⁻⁵)

6.8 ± 0.7

6.4 ± 0.6

Si-Ge

$\mathcal{l}$ ± $\Delta \mathcal{l}$ (nm)

20 ± 1 (4)

21 ± 1 (6)

Ρ ± Δρ (nm⁻³ × 10⁻⁵)

4 ± 0.4

3.7 ± 0.4