Abstract
We present a theoretical description of the high-frequency magnetic force microscopy (HF-MFM) technique. There are currently two operation modes: 1) the measurement of high-frequency currents via their magnetic stray fields and 2) the measurement of stray fields emanating from hard disk writer poles. The advanced HF-MFM technique employs the amplitude-modulation technique in order to convert the HF signal to the frequency range of the cantilever. Using the point-dipole approximation, we calculate the resulting force onto the cantilever for both cases.
Original language | English |
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Article number | 5208492 |
Pages (from-to) | 3228-3232 |
Number of pages | 5 |
Journal | IEEE Transactions on Magnetics |
Volume | 45 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2009 Sep 1 |
Externally published | Yes |
Keywords
- Frequency characteristics
- Hard disk write head
- High-frequency measurement
- Magnetic force microscope
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering