The simple co-precipitation route was used to couple commercial TiO 2 anatase nanopowder with nickel ferrite (NiFe 2 O 4 ). The morphology and the crystalline structure of composite nanoparticles were characterised by TEM, N 2 adsorption-desorption, XRD and Rietveld refinement, XPS and XAS. The optical and magnetic properties were investigated. After co-precipitation NiFe 2 O 4 nanoparticles, composed of spinel ferrite crystal phase, were formed on the surface of TiO 2 anatase nanopowder.
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