Figure 1: Section polished parallel to (110) of boron-doped diamond sample D4 (BDD-D4) measuring 0.185 mm thick.
From: Elastic and mechanical softening in boron-doped diamond
Vickers hardness measurements were made at every location shown by the white dots on the (110) plane with diagonals of the square pyramidal indenter parallel to <100> and <110>. FTIR spectra were obtained at locations 1–4 shown by the red boxes, and GHz-ultrasonic measurements of elastic properties were made at locations labeled BDD-1 and BDD-2, bounded by the red circles. A schematic illustration of these measurements is shown in Figure S4. X-ray diffraction and Raman measurements shown in Figures S2 and S3 were taken along paths represented by the blue arrows.
