Cantilever for Magnetic Force Microscopy with the AFM (09700-99). for Magnetic Force Microscopy Material: Si, monolithic Reflex coating: Aluminium Coating at sample side: magnetic (Pt/Cr) Chip holder: 3.4 x 1.6 x 0.3 mm, with alignment grooves Resonance frequency: 75 kHz Spring constant: 3 N/m Length: 0.225mm Width: 0.038mm Tip radius: less than 60nm 10 pcs Weight: 0.04 kg