Magnetic properties of Li and Fe co-doped NiO

The substitution of Fe within a NiO lattice produces significant ferromagnetic properties with a coercive field of 614 Oe with a high Curie temperature. Simultaneous doping of Fe and Li reduces the magnetic transition temperature significantly. A large coercive field of 1716 Oe at 5 K is observed in Li doped systems. Random substitution of non-magnetic Li induces a spin glass phase in diluted NiO. Electrical conductivity increases with doping of Fe and Li in NiO.