Hydrogen terminated graphene nanopore magnetization image

Magnetization of hydrogen-terminated graphene nanopore arrays at 300K with a diameter of 80 microns. W is the interpore spacing. DC magnetization was measured with a superconducting quantum interference device (SQUID). Magnetic fields were applied perpendicular to the arrays. The vertical axes in the graphs denote the magnetic moment per localized-edge pi orbital, assuming mono-hydrogenation of individual edge carbon atoms. The difference in magnetic moment between upper and lower curves of the hysteresis loop at zero applied field and the loop width at zero magnetic moment are 0.28 bohr magnetons and around 400 gauss, 0.2 bohr magnetons and 260 gauss, 0.12 bohr magnetons and 500 gauss for (a)–(c), respectively.

Courtesy: Appl. Phys. Lett.