Structure Investigations of Islands with Atomic-Scale Boron–Carbon Bilayers in Heavily Boron-Doped Diamond Single Crystal: Origin of Stepwise Tensile Stress

Table 1 Values of σ_∥ and σ_⟂ calculated according to Raman spectroscopy and X-ray diffraction data

Phonon line position ω (cm⁻¹)	Shift ω_S − ω₀ (cm⁻¹)	Δθ=θ₀ − θ' (°)	σ_∥ (GPa)	σ_⟂ (GPa)
1310	18	0.727	26.8	38.5
1305	23	0.963	34.3	50.5
1300	28	1.200	41.7	63.6