Magnetic properties of an individual Fe-alloy-capped nanotube synthesized by catalytic chemical vapor deposition have been investigated for use as probes for magnetic force microscopy (MFM). The remanent magnetization for one unit volume of the Fe-alloy-capped nanotube is 297 emu/cm 3 which is comparable to that of a conventional MFM tip. The MFM measurements have been performed using a combination of the Fe-alloy-capped nanotube tip and a frequency modulation detection system in order to improve the sensitivity of MFM.
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Yoshida et al. (2002) studied this question.
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