Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 33: Biomedical and molecular magnetism

MA 33.5: Vortrag

Mittwoch, 14. März 2018, 16:00–16:15, H 1012

Magnetic properties of novel single molecule magnets: Lanthanide dimetallofullerenes — •Georgios Velkos, Denis Krylov, Fupin Liu, Lukas Spree, and Alexey Popov — Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069 Dresden, Germany

The encapsulation of two lanthanide atoms inside a fullerene (carbon cage) creates a unique environment for the formation of a single-electron metal-metal bond between the endohedral lanthanide ions. Giant exchange coupling between 4f-based magnetic moments of the lanthanide ions and the spin of an unpaired electron gives a large 'superspin' persistent to room temperature. Single molecule magnetism with large blocking temperature of magnetization has been recently discovered in Dy2@C80. In this work, we further explore the concept of coupling localized magmatic moments of lanthanides via single-electron bond and analyze magnetic properties of dimetallofullerenes with different lanthanides.