Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 52: Poster Magnetism III

MA 52.38: Poster

Donnerstag, 12. März 2026, 15:00–17:00, P4

SQUID magnetometry of weakly diamagnetic samples using custom 3D-printed sample holders — •Thomas Kerschenbauer, Luca Bischof, and Rüdiger Klingeler — Kirchhoff Institut for Physics, Heidelberg, Germany

Magnetization studies of weakly diamagnetic samples by means of SQUID magnetometers using conventional sample holders often produce background signals comparable to the sample signal. Therefore, accurate background measurement and subtraction processes are necessary, which are challenging with conventional sample holders. Here, we present high-resolution magnetization data on representative diamagnetic samples, including the aromatic compounds naphthalene and anthracene. We obtained these results through SQUID measurements using custom sample holders designed for the Quantum Design MPMS 3 with SLA 3D printing technology. This offers a versatile and cost-effective solution for manufacturing improved sample holders. These sample holders allow us, e.g., to improve the positioning of the sample, which requires high precision for background subtraction. It also allows for flexibility in sample shape, size, and orientation. These improvements can be used to study weakly magnetic materials and enable measurements that are limited by background signals of conventional sample holders.

Keywords: SQUID; Background Subtraction; 3D Printing; Sample Holders; Diamagnetism