title: Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry.
abstract: 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.
authors: Department of Physics, University of Basel, 4056 Basel, Switzerland.
authors: A
authors: A
authors: Buchter
authors: J
authors: J
authors: Nagel
authors: D
authors: D
authors: Rüffer
authors: F
authors: F
authors: Xue
authors: D P
authors: DP
authors: Weber
authors: O F
authors: OF
authors: Kieler
authors: T
authors: T
authors: Weimann
authors: J
authors: J
authors: Kohlmann
authors: A B
authors: AB
authors: Zorin
authors: E
authors: E
authors: Russo-Averchi
authors: R
authors: R
authors: Huber
authors: P
authors: P
authors: Berberich
authors: A
authors: A
authors: Fontcuberta i Morral
authors: M
authors: M
authors: Kemmler
authors: R
authors: R
authors: Kleiner
authors: D
authors: D
authors: Koelle
authors: D
authors: D
authors: Grundler
authors: M
authors: M
authors: Poggio