Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry.
作者： A. Buchter , J. Nagel , D. Rüffer , F. Xue , D. P. Weber
DOI: 10.1103/PHYSREVLETT.111.067202
关键词:
摘要: Using an optimally coupled nanometer-scale SQUID, we measure the magnetic flux originating from individual ferromagnetic Ni nanotube attached to a Si cantilever. At same time, detect nanotube's volume magnetization using torque magnetometry. We observe both predicted reversible and irreversible reversal processes. A detailed comparison with micromagnetic simulations suggests that vortexlike states are formed in different segments of nanotube. Such stray-field free interesting for memory applications noninvasive sensing.
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