Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 30: Magnetic instrumentation and characterization
MA 30.2: Vortrag
Mittwoch, 3. April 2019, 11:00–11:15, H53
SQUID Setup for the Measurement of Antiferromagnets and other Magnetically Weak Samples — Michael Paulsen1, Jörn Beyer1, Michael Fechner2, Klaus Kiefer3, •Bastian Klemke3, and Dennis Meier4 — 1Physikalisch-Technische Bundesanstalt, Berlin, Germany — 2Max Planck Institute for the Structure and Dynamics of Matter, CFEL, Hamburg, Germany — 3Helmholtz-Zentrum Berlin, Berlin, Germany — 4Norwegian University of Science and Technology, Trondheim, Norway
Antiferromagnets have been studied for several decades in fundamental research and, more recently, as materials of interest in spintronic devices. While these materials typically possess zero net magnetization, predictions of a permanent magnetization of higher order have been made but very few confirmed measurements exist. In this presentation, the development of a SQUID setup for the measurement of antiferromagnets and other weakly magnetic samples is presented. The initial measurements demonstrate that the setup is especially well suited for measuring weak quadrupolar magnetic fields in magnetically shielded rooms.