Transparent, conducting, and ferromagnetic multilayer films based on ZnO/Fe3O4 by pulsed laser deposition technique

Multilayer thin films based on zinc oxide (ZnO) and iron oxide (Fe3O4) are fabricated using pulsed laser deposition method. The structural, electrical, and magnetic properties of these multilayer films are studied X-ray diffraction study shows that ZnO film is highly oriented along (002) direction, while Fe3O4 film has preferred orientation along (222) direction These films arc transparent, conducting, and ferromagnetic at room temperature. The temperature dependence of resistance measurement shows semiconducting nature and charge transportation in these films is due to tunneling. Negative magneto-resistance of 028% is observed at room temperature (C) 2010 Elsevier BV All rights reserved