Magnetic and structural properties of Co-doped ZnO thin films

Growth temperature plays a major role on the magnetic and structural properties of Co-doped ZnO thin films. Ferromagnetism is observed only in films grown at temperatures within a narrow range around 450 degrees C. Metallic Co is detected in 40-300 nm thick films, and the estimated content is compatible with the magnetic moment observed. (c) 2006 Elsevier B.V. All rights reserved.