Type: MFMR
Magnetic force microscopy - Reflex coating
NanoWorld Pointprobe® MFM probes are designed for magnetic force microscopy. The force constant and the special hard magnetic tip-side coating of the MFM type are optimised for this type of application. This type of probe yields a very high force sensitivity, while simultaneously enabling tapping™ and lift mode operation. All probes of the Pointprobe® series are made from monolithic silicon which is highly doped to dissipate static charge. They are chemically inert and offer a high mechanical Q-factor for high sensitivity. The tip is shaped like a polygon based pyramid with a height of 10-15 µm.

Additionally this probe offers unique features:

  • typical tip radius of curvature < 50 nm
  • high magnetic contrast and lateral resolution < 100 nm
  • electrically conductive coating

    Soft magnetic samples may be influenced by the tip magnetization !

    The reflex coating on the detector side of the cantilever enhances its reflectivity and prevents light from interfering within the cantilever.

    • Technical Data Value Range*
    Thickness 3 µm 2.5 - 3.5
    Mean Width 28 µm 22.5 - 32.5
    Length 225 µm 220 - 230
    Force Constant 2.8 N/m 1.2 - 5.5
    Resonance Frequency 75 kHz 60 - 90
     
    Order Code Quantity Data Sheet
    MFMR-10 10 yes
    MFMR-20 20 yes
    MFMR-50 50 no
    MFMR-W 380 yes

    * Typical values

    Hard Magnetic Coating
    Hard magnetic coating is an approximately 40 nm thick cobalt alloy coating on the tip-side of the cantilever leading to a permanent magnetization of the tip with the direction usually along the tip axis. We recommend to magnetize the tip by means of a strong magnet (e.g. a NdFeB magnet, a few millimeters in size). As the coating is almost stress free the bending of the cantilever due to stress is less than 2°.
    Reflex Coating
    Reflex coating is an approximately 30 nm thick aluminium coating on the detector side of the cantilever which enhances the reflectivity of the laser beam by a factor of 2.5. Furthermore it prevents light from interfering within the cantilever. As the coating is almost stress free the bending of the cantilever due to stress is less than 2°.

    For more information contact: info@nanoworld.com

    POINTPROBE® is a registered trademark of NANOWORLD AG
    TappingMode™ is a trademark of Digital Instruments Inc.
    GelPak® is a registered trademark of Vichem Corporation
    All data are subject to change without notice.     		NanoWorld AG
    Rue Jaquet-Droz 1
    Case Postale 216
    CH-2002 Neuchâtel
    Switzerland
    www.nanoworld.com

    [print datasheet]