Effect of Annealing Temperature on the Structural and Magnetic Properties of NiFe₂O₄Nanoferrites  

作　　者：A. Sangeetha K. Vijaya Kumar G. Nanda Kumar 

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

出　　处：《Advances in Materials Physics and Chemistry》2017年第2期19-27,共9页材料物理与化学进展（英文）

摘　　要：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.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.

关 键 词：Sol-Gel Nickel Ferrite Crystallite Size STRUCTURAL PROPERTIES MAGNETIC PROPERTIES 

分 类 号：O6[理学—化学]