Morphology and magnetic properties of Co0.8Fe2.2O4 films prepared by the chemical solution deposition

Abstract Co0.8Fe2.2O4 ferrite thin films have been prepared on Si(0 0 1) substrates by the chemical solution deposition. Structural characteristics indicate all films are single phase with spinel structure and the space group Fd 3 m - O h 7 and the mean grain size increases from 8 to 30 nm with the increase of annealing temperature. The magnetic properties of Co0.8Fe2.2O4 thin films are highly dependent on annealing temperature. The sample annealed at 800 °C possesses high saturation magnetization, moderate coercivity and squareness ratio, making it a promising application candidate in high-density record and magneto–optical materials.