Room temperature magnetism in Ni-doped CdSe nanoparticles
Room temperature ferro-magnetism in Ni-doped CdSe nanoparticles (NPs) synthesized by a wet chemical precipitation method is reported. Transmission electron microscopy shows that the average particle size of Ni-doped CdSe NPs is about 8 nm. X-ray diffraction shows the zinc blende (cubic) structure of Cd1-x Ni x Se NPs. Superconducting quantum interference device was utilized to study the magnetic behavior of NPs. Magnetic studies revealed that pure CdSe NPs exhibit diamagnetic behavior at 300 K, whereas 5% Ni doped CdSe NPs shows the mixture of paramagnetic and ferromagnetic behavior.
KeywordsSodium Selenite Ferromagnetic Behavior Superconducting Quantum Interference Device CdSe Nanoparticles Paramagnetic Behavior
This work is supported by Department of Science and Technology (DST) (sanction order no. SR/S2/CMP-02/2005). The authors are grateful to DST for its generous funding. The authors would like to thank Prof. R. Chatterji, IIT Delhi for providing SQUID facility.