Seminar on Magnetism
Group of Magnetism at the Department of Condensed Matter Physics
of Charles University and MGML has a pleasure to invite you to attend the joint seminar
on 29th April 2026 at 14:10
at Faculty of Mathematics and Physics of Charles University, Ke Karlovu 5, 121 16 Praha 2
Lecture room F2
Lenka Kubíčková
Institute of Physics of the CAS and Department of Low-Temperature Physics, MFF CUNI
Magnetocaloric effect in strongly frustrated magnets
Lenka Kubíčková » Magnetocaloric effect in strongly frustrated magnets
Institute of Physics of the CAS and Department of Low-Temperature Physics, MFF CUNI
Online link: cesnet.zoom.us Ask R. Colman for password.
Location: Lecture room F2, first floor of the building Ke Karlovu 5
Frustrated magnets, characterized by competing magnetic interactions, have been suggested as an alternative to traditional magnetocalorics due to their inherent high entropy, which can be released in comparatively small applied magnetic fields [1]. In this talk, we will focus on compounds of the langbeinite type, which crystallize in the non-centrosymmetric polar space group P213. These compounds feature a highly frustrated motif of two interconnected trillium lattices of magnetic ions, consisting of a three-dimensional network of equilateral corner-sharing triangles [2,3]. We will show insights from magnetic and thermodynamic data on a model langbeinite-type compound Cs2Fe2(MoO4)3 in combination with neutron diffraction and the local probe of 57Fe Mössbauer spectroscopy. Finally, we will present the magnetocaloric characterization of this highly frustrated magnet [4].
[1] M. E. Zhitomirsky, Phys. Rev. B, 67, 7 (2003)
[2] J. M. Hopkinson et al., Phys. Rev. B, 74, 224441 (2006)
[3] I. Živković et al., Phys. Rev. Let., 127, 157204 (2021)
[4] L. Kubíčková et al., Chem. Mater., 23, 7016 (2024)
If you wish to receive regular updates on fothcoming seminars, contact R. Colman.
