Figure 3
From: Robust magnetic moments on the basal plane of the graphene sheet effectively induced by OH groups
Magnetic properties of aGO and the OHG samples obtained at different annealing temperatures measured by a superconducting quantum interference device (SQUID) magnetometer.
(a) Typical mass magnetization dependence on the temperature (M – T) of OHG-500 measured from 2 to 300 K under the applied field H = 1 kOe. Inset is the corresponding 1/χ – T curve. Red symbols are the measurements and black solid lines are fitted by the Curie law. (b) Mass magnetization dependences on the applied magnetic field (M – H) of aGO and the OHG samples measured at 2 K. Colorful symbols are the measurements and solid lines are fit to Brillouin function with g = 2.
