Induced magnetic ordering by proton irradiation in graphite.
We provide evidence that proton irradiation of energy 2.25 MeV on highly oriented pyrolytic graphite samples triggers ferro- or ferrimagnetism. Measurements performed with a superconducting quantum interferometer device and magnetic force microscopy reveal that the magnetic ordering is stable at room temperature.
Esquinazi
P
P
Institut für Experimentelle Physik II, Universität Leipzig, Linnéstrasse 5, D-04103 Leipzig, Germany. esquin@physik.uni-leipzig.de
Spemann
D
D
Höhne
R
R
Setzer
A
A
Han
K-H
KH
Butz
T
T