%0 Conference Proceedings %T Effect of Zn Doping on Structural and Optical Properties ofFe3O4 Nanoparticles Prepared by Co-Precipitation Method %A Rezai Marand, Zahra %A Shahtahmassebi, Nasser %A Rezaee Roknabadi, Mahmood %A Housaindokht, Mohammad Reza %A M. Rezaee Roknabadi %A Helmi Rashid Farimani, Mitra %A R. Etefagh %J 4th International Conference onNanostructures-ICNS4 %D 2012