OICC Press International Nano Letters 2228-5326 3 1 (December 2013) 2013 04 08 The amazing effects and role of PVP on the crystallinity, phase composition and morphology of nickel ferrite nanoparticles prepared by thermal treatment method 10.1186/2228-5326-3-19 EN Mahmoud Goodarz Naseri Department of Physics, Faculty of Science, Malayer University, Malayer, 65719-95863, IR Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, 43400, MY Elias Saion Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, 43400, MY Nasrin Khalil Zadeh Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, 43400, MY Journal Article 2013 04 08 Abstract Nickel ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various concentrations of poly(vinylpyrrolidone) followed by calcination temperature. X-ray diffraction (XRD) analysis was performed to determine the degree of crystallinity of the ferrite nanoparticles. By transmission electron microscopy, the morphology and average particle size of the nickel ferrite nanoparticles were evaluated which had good agreement with the XRD results. Fourier transform infrared spectroscopy suggested the presence of metal oxide bands in all samples as well as the effective elimination of organic constituents after calcinations. Measurements of the extent of magnetization of the nickel ferrite nanoparticles synthesized in different concentrations were obtained at room temperature using a vibrating sample magnetometer.