Publication
Using an optimally coupled nanometer-scale SQUID, we measure the magnetic flux originating from an individual ferromagnetic Ni nanotube attached to a Si cantilever. At the same time, we detect the nanotube's volume magnetization using torque magnetometry. We observe both the predicted reversible and irreversible reversal processes. A detailed comparison with micromagnetic simulations suggests that vortexlike states are formed in different segments of the individual nanotube. Such stray-field free states are interesting for memory applications and noninvasive sensing.
Pedro Miguel Nunes Pereira de Almeida Reis, Dong Yan, Arefeh Abbasi
Frédéric Mila, Pratyay Ghosh, Ronny Thomale
Henrik Moodysson Rønnow, Diane Virginie Marie Lançon