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Oxygen Deficiency and Room Temperature Ferromagnetism in Undoped and Cobalt-Doped \hbox {TiO}_{bm 2} Nanoparticles

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2 Author(s)
Rajkumar, N. ; Sch. of Phys., Madurai Kamaraj Univ., Madurai, India ; Ramachandran, K.

The compositional analysis done on the synthesized undoped and cobalt (Co)-doped titanium dioxide ( TiO2) nanoparticles by X-ray photoelectron spectroscopy and energy dispersive X-ray analysis suggests oxygen deficiency in undoped and Co-doped TiO2 samples. Magnetic investigations by vibrating sample magnetometer (VSM) indicate that undoped TiO2 nanoparticles possess ferromagnetic ordering at room temperature due to the oxygen deficiency and in Co-doped TiO2, the enhancement in magnetic moment is due to Co doping.

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Nanotechnology, IEEE Transactions on  (Volume:10 ,  Issue: 3 )