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 SPM and AFM 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 reflectance and prevents light from interfering within the cantilever.
| Cantilever Data |
Value | Range* |
| Thickness |
3.0 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 aluminum coating on the detector side of the cantilever which enhances the reflectance 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
All data are subject to change without notice.
NanoWorld AG
Rue Jaquet-Droz 1
Case Postale 216
CH-2002 Neuchâtel
Switzerland
www.nanoworld.com
