https://doi.org/10.1140/epjp/s13360-024-05597-y
Regular Article
Demagnetizing correction in solenoid measurement of hard magnets based on a differential paramagnetic approach
Departament de Física, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
Received:
8
June
2024
Accepted:
28
August
2024
Published online:
6
September
2024
The open-circuit demagnetization curve of a hard-magnetic cylinder of length-to-diameter ratio 
measured in a high-field solenoid can be corrected to its corresponding closed-circuit curve using accurately calculated magnetometric demagnetizing factor 
for a paramagnetic cylinder of susceptibility 
, based on a differential paramagnetic approach. The corrected curve can be very close to the curve directly measured using an electromagnet in some cases. However, for grain-oriented cylinders along the easy axis, it has a more rounded knee and a reduced intrinsic coercive force compared to the electromagnet-measured nearly rectangular closed-circuit curve owing to the collective switch of the magnetic moments of grains and the enhanced local demagnetizing fields at the cylinder ends.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
