The effect of post-calcination on cation distributions and magnetic properties of the coprecipitated MgFe2O4 nanoparticles

• Published in: Applied physics. A, Materials science & processing Vol. 123; no. 6; pp. 1 - 7
• Main Authors: Aliyan, N., Mirkazemi, S. M., Masoudpanah, S. M., Akbari, S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-06-2017; Springer Nature B.V
• Subjects: Applied physics; Cations; Characterization and Evaluation of Materials; Condensed Matter Physics; Ferrimagnetism; Infrared spectroscopy; Machines; Magnetic measurement; Magnetic properties; Magnetic saturation; Magnetism; Magnetization; Manufacturing; Materials science; Nanoparticles; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Properties (attributes); Roasting; Scanning electron microscopy; Spectroscopic analysis; Surfaces and Interfaces; Thin Films; Transmission electron microscopy; Vibration; X-ray diffraction
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-017-1053-8

In this study, the effects of post-calcination temperature on the structure, cation distributions and magnetic properties of the coprecipitated MgFe
2
O
4
nanoparticles have been investigated. The structure and cation distributions between the tetrahedral and octahedral sites characterized by X-ray diffraction method showed single phase MgFe
2
O
4
nanoparticles that had a partially inverse structure which the inversion degree depended on the post-calcination temperature. The cation distributions were also confirmed by the infrared spectroscopy and magnetic measurement results. The square-like shape MgFe
2
O
4
nanoparticles were observed by scanning and transmission electron microscopy. Magnetic properties of MgFe
2
O
4
nanoparticles studied by vibration sample magnetometry showed the ferrimagnetic characteristics which the saturation magnetization increased from 8.02 to 13.41 emu/g with the increase of post-calcination temperature from 600 to 700 °C and then decreased to 10.37 emu/g for 800 °C. The highest saturation magnetization of 13.41 emu/g was attributed to the low inversion degree.