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- Mohanad Al Mamoori
- Institute of Physics, Goethe-University Frankfurt 1 , 60438 Frankfurt am Main, Germany
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- Christian Schröder
- Institute for Applied Materials Research, Bielefeld University of Applied Science 3 , 33619 Bielefeld, Germany
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- Lukas Keller
- Institute of Physics, Goethe-University Frankfurt 1 , 60438 Frankfurt am Main, Germany
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- Michael Huth
- Institute of Physics, Goethe-University Frankfurt 1 , 60438 Frankfurt am Main, Germany
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- Jens Müller
- Institute of Physics, Goethe-University Frankfurt 1 , 60438 Frankfurt am Main, Germany
抄録
<jats:p>In this paper we present first-order reversal curve (FORC) diagrams of ensembles of three-dimensional Co3Fe nanostructures as 2 × 2 arrays of nano-cubes and nano-trees. The structures are fabricated and investigated by an advanced platform of focused electron beam induced deposition combined with high-resolution detection of magnetic stray fields using a home-built micro-Hall magnetometer based on an AlGaAs/GaAs heterostructure. The experimental FORC diagrams are compared to macrospin simulations for both geometries at different angles of the externally applied magnetic field. The measured FORC diagrams are in good agreement with the simulated ones and reflect non-uniform magnetization reversal dominated by multi-vortex states within, and strong magnetic coupling between, the building blocks of our nanostructures. Thus, a FORC analysis of small arrays of 3D magnetic nanostructures provides more detailed insights into the mechanisms of magnetization reversal beyond standard major hysteresis loop measurements.</jats:p>
収録刊行物
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- AIP Advances
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AIP Advances 10 (1), 2020-01-01
AIP Publishing