학술논문
Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry
Document Type
Working Paper
Author
Source
Phys. Rev. Lett. 111, 067202 (2013)
Subject
Language
Abstract
Using an optimally coupled nanometer-scale superconducting quantum interference device, 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 vortex-like states are formed in different segments of the individual nanotube. Such stray-field free states are interesting for memory applications and non-invasive sensing.
Comment: 12 pages, 4 figures
Comment: 12 pages, 4 figures