
Magnetic Force Microscopy
Basic MFM Operation
262 Dimension 3100 Manual Rev. D
8. Under Scan Controls, set the Scan size to 5µm and Scan rate to 1–2Hz.
9. Set the Channel 1 Data type to Height, the Data scale to 75nm and the Line direction to
Retrace.
10. Engage the AFM and make the necessary adjustments to obtain a good topographical image
while displaying height data.
Figure 15.2e Topographic (left) and Magnetic Force Gradient Image (right)
Note: The MFM data displays in Channel 2; however, the parameter settings are
different depending on whether Phase Detection or Amplitude Detection is
being used
CAUTION: Use the highest possible Setpoint to ensure that the tip is
contacting the surface only lightly. The image should be similar to
the topographic image shown on the left of Figure 15.2e. The
surface is fairly flat with lubrication nodules of various sizes. A
good image of the nodules indicates that the tip is sharp.
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