Thermo-magnetic behaviour of AFM–MFM cantilevers

Mithlesh Kumar (1, 2) , Richard Arinero (3, 4) , Wladimir Bergez (1) , Philippe Tordjeman (1)

1 IMFT - Institut de mécanique des fluides de Toulouse
2 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
3 IES - Institut d’Electronique et des Systèmes
4 NANOMIR - Composants à Nanostructure pour le moyen infrarouge

Atomic force microscopy (AFM) experiments were performed to study the behaviour of AFM cantilevers under an external magnetic field B and temperature field produced by a coil with an iron core. Four cantilever types were studied. Forces were measured for different B values and at various coil-to-cantilever separation distances. The results were analysed on the basis of a phenomenological model. This model contains the contribution of two terms, one monopole-monopole interaction at short distance, and one apparent paramagnetic interaction in del B-2 at large distance, which represents the temperature effects. We observe a good agreement between the model and the experimental data.

Mots clés: Magnetic force microscopy (MFM); AFM; Cantilever; Coating; Dc magnetic field

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Mithlesh Kumar, Richard Arinero, Wladimir Bergez, Philippe Tordjeman. Thermo-magnetic behaviour of AFM–MFM cantilevers. Measurement Science and Technology, 2015, 26 (8), pp.085002. ⟨10.1088/0957-0233/26/8/085002⟩. ⟨hal-01279286⟩