The possibility of vanadium substitution on Co lattice sites in CoFe₂O₄ synthesized by sol–gel autocombustion method

Authors

Parvin Imanipour, Saeed Hasani, Amir Seifoddini, Atefeh Farnia, Fatemeh Karimabadi, Khadijeh Jahanbani-Ardakani, Fatemeh Davar

Publication date

2020/5/17

Journal

Journal of Sol-Gel Science and Technology

Pages

1-11

Publisher

Springer US

Description

In this study, the effect of vanadium addition on the structural and magnetic properties of cobalt ferrite (Co_1−xV_xFe₂O₄; where x = 0, 0.05, 0.10, 0.15, 0.20, and 0.25) prepared by a novel sol–gel autocombustion method was investigated. The formation of cubic spinel structure (space group Fd3m) was confirmed by X-ray diffraction in combination of Rietveld structure refinement analysis and transform infrared spectroscopic spectrum (FT-IR) analyses. Also, phase and elemental analyses confirmed that an inevitable secondary phase of hematite along with the spinel phase appears by addition of vanadium; therefore, a nanocomposite was formed in the sample containing vanadium. However, the SEM observations in combination of the results obtained by Rietveld structure refinement analysis showed that the presence of vanadium can affect the size of synthesized cobalt ferrite. VSM measurements showed that …