In tapping AFM one generally lowers the scan rate drastically to scan large areas without scanning image artifacts. At 0.1 Hz 85 minutes are required to take a 512x512 pixel image. Since an MFM image requires the additional interleave scan at the lift height, such an MFM image would take 170 minutes.Contact AFM scan rates can be quite large even over large scan areas. This MFM image was taken over a 60 μm field of view at 1 Hz using a magnetically coated contact tip- the Veeco MSNC-MFM. Including the interleave MFM scan, this image took 17 minutes, a 10X improvement in acquisition time. The image shows a magnetic tape with several tracks of recorded domains.
No comments:
Post a Comment