SiC-STEP Calibration Samples

Step Height

  • 6H-SiC (0001) based calibration sample which is designed to perform easy calibrations of an AFM scanner's vertical movements in several nanometers interval. The simplicity of calibration of the calibration process is provided by the nearly uniform distribution of half-monolayer high steps (either 0.75 or 1.5nm) on the sample surface demonstrating both chemical and mechanical stability. The step height corresponds to the half of the lattice constant of the 6H-SiC crystal in the (0001) direction.

    PELCO® Technical Notes for SiC-STEP Calibration Sample (147K pdf)

    Specifications: SiC / 0.75 SiC / 1.5
    Structure: SiC with Steps
    Single Step Height: 0.75nm 1.5nm
    Average Inter Step Distance: 0.15-0.4µm 0.2-0.5µm
    Misorientation of Surface: ~0.2° ~0.3°
    Average Roughness of Area Between Steps (terraces): 0.09nm
    Chip Size: 5 x 5 x 0.3mm