TY  - JOUR
A1  - Al Mamoori, Mohanad K. I.
A1  - Schröder, Christian
A1  - Keller, Lukas
A1  - Huth, Michael
A1  - Müller, Jens
T1  - First-order reversal curves (FORCs) of nano-engineered 3D Co-Fe structures
T2  - AIP Advances
N2  - 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.
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/57229
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-572293
SN  - 2158-3226
N1  - This paper was presented at the 64th Annual Conference on Magnetism and Magnetic Materials.
VL  - 10
IS  - 015319
PB  - American Institute of Physics
CY  - New York, NY
ER  -