Magnetic properties of Co: Tio2 thin films with low cobalt concentration

The magnetic properties of co: tio2 thin film with low cobalt concentration was investigated. the co: tio2 thin films were grown on n-type si (100) substrate using metal organic chemical vapour deposition technique. the cobalt concentration in the co: tio2 thin film was determined using energy dispersive x-ray spectrometer and the magnetic properties of the film was determined using a vibrating sample magnetometer. the energy dispersive x-ray spectrometer results show that the cobalt concentration in co: tio2 thin films (denoted by x) are x = 0,x = 0.2%,x = 0.3%,x = 0.7%,and x = 1.1%. the vibrating sample magnetometer results indicate that each film (exclude x = 0) exhibits ferromagnetic properties at room temperature. saturation magnetisation of co: tio2 thin film varies from 1,0 emu/cm3 to 4,4 emu/cm3 and increases as the cobalt concentration in co: tio2 thin film increases. on the other hand,magnetic coercivity of co: tio2 thin films varies from 4 mt to 12 mt and decreases as the concentration of cobalt in co: tio2 thin film increases. © 2017 universiti putra malaysia press.