Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.3: Poster
Montag, 9. März 2026, 09:30–12:30, P2
Using applied magnetic fields to induce unconventional magnetic order in the frustrated quantum magnet, clinoatacamite, Cu2Cl(OH)3 — •Juliana Avtarovski1, Kirrily Rule1,2, Leonie Heinze3,4, Stefan Sullow3, Michael Lerch1, Moeava Tehei1, and Siobhan Tobin2 — 1School of Physics, University of Wollongong, NSW 2522, Australia — 2Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia — 3Institut für Physik der Kondensierten Materie, Technische Universität Braunschweig, D- 38106 Braunschweig, Germany — 4Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, 85748 Garching, Germany
The natural mineral clinoatacamite, [Cu2Cl(OH)3], exhibits low-temperature, frustrated magnetic behaviour where competing interactions are responsible for novel magnetic properties. Attempts to establish the magnetic phases in this material have been undertaken and an unconventional applied field (H||b) phase diagram has been revealed. Two critical transition temperatures at zero field have been identified with long range antiferromagnetic (AFM) order for T1 < 6K, and paramagnetic behaviour for T2 >18K. In-field magnetisation data collected between 6-18K reveal three distinct phases for H||b which are not completely understood. Until now, the phase diagram of clinoatacamite has not been probed for H||a* or H||c*. We present neutron scattering of single crystal clinoatacamite in applied fields to map out the phase diagram for H||a*.
Keywords: magnetic phase diagram; neturon diffraction