Magnetic Bistability at a Record High Temperature in a Sub-Monolayer of Endohedral Fullerenes

Endohedral metallofullerenes are only slightly larger than the well-known “buckyballs” C60, and they contain a so-called endohedral unit, which can exhibit magnetic bistability. A team of the Leibniz Institute for Solid State Research (IFW) from Dresden, Germany, led by Dr Alexey Popov has now demonstrated a record blocking temperature of 28 Kelvin (-245 °C) at which the magnetic bistability still survives in a submonolayer of a chemically functionalized species of endofullerenes.

In this research, X-ray magnetic circular dichroism measurements at low temperatures and high magnetic field at the X-Treme beam line are crucial because they reveal the magnetic moment of the terbium atoms in the endohedral unit with ultra-high sensitivity.

The results pave the way toward using such single-molecule magnets as information carriers or magnetic bits.



Dr. Alexey Popov
Leibniz Institute for Solid State and Materials Research
Helmholtzstraße 20, 01069 Dresden, Germany

Dr. Jan Dreiser
PSI, Photon Science Division
Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
Telephone: +41 56 310 5895

Original Publication

Robust Single Molecule Magnet Monolayers on Graphene and Graphite with Magnetic Hysteresis up to 28 K
Lukas Spree et al.
Advanced Functional Materials2105516 (2021)
DOI: 10.1002/adfm.202105516 (link is external)