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SquidLab-A user-friendly program for background subtraction and fitting of magnetization data.

Matthew J Coak¹, Cheng Liu², David M Jarvis²

¹Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom.

The Review of Scientific Instruments

|March 2, 2020

Summary

This summary is machine-generated.

SquidLab is a free, open-source software for robust background subtraction and dipole fitting of magnetization data. It aids in analyzing magnetic samples, especially those with complex backgrounds, by accurately extracting magnetic moments.

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Area of Science:

Materials Science
Condensed Matter Physics
Magnetometry

Background:

Accurate analysis of magnetic samples requires separating sample signals from background noise.
Traditional methods struggle with small magnetic moments or complex sample environments.
Specialized software is needed for robust background subtraction and dipole fitting.

Purpose of the Study:

Introduce SquidLab, an open-source software for background subtraction and dipole fitting.
Provide a user-friendly graphical interface for analyzing magnetization data.
Enhance the extraction of magnetic moments from challenging samples.

Main Methods:

Developed a modular, object-oriented platform in Matlab.
Implemented flexible background subtraction and dipole fitting algorithms (Levenberg-Marquardt, SVD).
Integrated importers for various SQUID magnetometer systems (MPMS, S700X).

Main Results:

SquidLab offers robust performance across diverse background and signal types.
The software successfully separates background and sample contributions for accurate moment extraction.
A plugin system allows for user-driven extension of functionality.

Conclusions:

SquidLab provides a valuable, free tool for the scientific community.
The software improves the analysis of magnetic data from challenging samples.
It facilitates more accurate determination of magnetic moments in materials research.