Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 35: Poster 2
MA 35.59: Poster
Donnerstag, 8. September 2022, 16:00–18:00, P4
DC-Mode Background Subtraction for the MPMS3 SQUID Magnetometer by Quantum Design — •Börge Mehlhorn1, Anja Wolter1, and Bernd Büchner1,2 — 1Leibniz IFW Dresden, D-01069 Dresden, Germany — 2Institute for Solid State and Materials Physics and Würzburg-Dresden Cluster of Excellence ct.qmat, TU Dresden, D-01062 Dresden, Germany
Due to vibrating-sample SQUID magnetometry becoming more common in magnetization studies, the software satisfying the needs of slow linear DC mode became rather sparse. As one example raw-voltage background subtraction software is no longer supplied with the instruments, but is needed, whenever the background signal becomes large compared to the intrinsic magnetization signal of the sample.
As a response a handful of scientists began developing their own solutions. Most commonly known is the open source software published by M. J . Coak et al.1 at the universities of Warwick and Cambridge free for academic use and based on MathWorks MATLAB.
The solution presented here is an independent work published as free (as in freedom) open source software. It is founded on the ecosystem of scientific software in the Python programming language. Therefore, it does not only allow frictionless future contributions by the scientific community, but also makes use of the countless human hours invested in that open source ecosystem in the past.
As an interesting scientific example the software will be demonstrated on a low-moment small-size 2D van-der-Waals crystal mounted on a horizontal rotator.
- 1
- M. J . Coak et al., “SquidLab – a user-friendly program for background subtraction and fitting of magnetization data”, Review of Scientific Instruments 91, 023901 (2020)