Enhanced ferromagnetic properties of diluted Fe doped ZnO with an Al co-doping

Al‐added Zn0.99‐xFexAl0.01O (x = 0, 0.02, 0.05) powders were prepared with an annealing in an Ar atmosphere at 1200 °C. All the peaks from the X‐ray diffraction patterns of the samples belonged to the hexagonal (P63mc) lattice of ZnO, and no indication of a secondary phase was found. The lattice parameters for the Zn0.94Fe0.05Al0.01O were a0 = 3.254 Å and c0 = 5.209 Å at room temperature. The hysteresis curve for the Zn0.94Fe0.05Al0.01O at room temperature revealed a ferromagnetic phase. The temperature dependency of the magnetization curve was measured from 60 to 350 K and revealed that the Curie temperature was above room temperature. In this study we demonstrated an enhanced ferromagnetic behavior due to an electric property change with an Al co‐doping effect. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)