Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 42: Molecular Magnetism and Magnetic Particles / Clusters II
MA 42.5: Vortrag
Donnerstag, 12. März 2026, 10:30–10:45, HSZ/0004
Magnetocaloric effect of the centered-square, centered-hexagon, and double-pyramidal spin models — •Hamza Meel and Jürgen Schnack — Bielefeld University, Faculty of Physics, Bielefeld, Germany
Molecular magnetocalorics have been proposed as a replacement to 3He for cryogenic applications, however the search for the best compound for such an application is still ongoing. Specifically, magnetic molecules exhibiting a high adiabatic entropy change in the kelvin and sub-kelvin range are sought after. Such an entropy change could for instance be achieved by a molecule whose ground state is highly degenerate. We investigate three frustrated systems, the centered square, the centered-hexagon, and the double-pyramidal spin models. Their figures of merits and their magnetocaloric effect are discussed.
Keywords: Magnetocalorics; Magnetocaloric effect; Spin Model; Frustration; Heisenberg Model