Author(s)

A. Sangeetha^1*, K. Vijaya Kumar², G. Nanda Kumar³

¹Department of Physics, Indur Institute of Engineering and Technology, Siddipet, India.
²Department of Physics, Jawaharlal Nehru Technological University, Hyderabad College of Engineering, Nachupally (Kondagattu), Karimnagar-Dist., Telangana, India.
³Department of Geo-Physics, Osmania University, Hyderabad, India.

Nanocrystalline NiFe₂O₄ spinel ferrites were synthesized by sol-gel method. The structural and magnetic properties were investigated using X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). Annealing temperature showed prominent effect on the grain size. The average grain size of NiFe₂O₄ was observed to increase from 31 nm to 54 nm as the annealing increased from 500℃ to 1000℃. The IR spectra showed the absorption bands corresponding to stretching of tetrahedral and octahedral bands. The magnetic properties were observed to depend strongly on the annealing temperature.

Sol-Gel, Nickel Ferrite, Crystallite Size, Structural Properties, Magnetic Properties

Sangeetha, A. , Kumar, K. and Kumar, G. (2017) Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe₂O₄ Nanoferrites. Advances in Materials Physics and Chemistry, 7, 19-27. doi: 10.4236/ampc.2017.72003.