Berlin 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MA: Fachverband Magnetismus
MA 25: Magnetic Imaging and Sensors II
MA 25.5: Talk
Wednesday, March 20, 2024, 10:30–10:45, EB 301
Introduction to magnetization measurements with high hydrostatic pressure — •Börge Mehlhorn1, Markus Hücker2, Laura Teresa Corredor Bohórquez1, Anja Wolter1, and Bernd Büchner1,3 — 1Leibniz IFW Dresden, D-01069 Dresden, Germany — 2Weizmann Institute of Science, IL-7610001 Rehovot, Israel — 3Institute for Solid State and Materials Physics and Würzburg-Dresden Cluster of Excellence ct.qmat, TU Dresden, D-01062 Dresden, Germany
Hydrostatic pressure has become an important addition to the variables that can be controlled in the characterization of novel materials. It allows the lattice parameters of a solid material to be altered without doping or exchanging atoms, potentially leading to the tuning of its physical properties. For many characterization methods technical developments like diamond anvil cells have led to the discovery of new properties in many materials, for example high-pressure superconducting states. Those advances are however not easily transferred to bulk magnetization measurements. Not only is the choice of materials for the fabrication of a pressure device limited, its geometry is also greatly constrained. Sample space, resolvable moment and maximum pressure have to be balanced to fit the specific research goals. This talk gives an introduction to the study of magnetization of a sample that is simultaneously exposed to high magnetic field, low temperature and high pressure. An experiment design tuned to resolve very low magnetic moments of the quasi-2D Heisenberg antiferromagnet La2CuO4 are presented as an example.
Keywords: pressure; magnetization; magnetometer; LCO; SQUID