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Home > View All Issues > Volume 12 (March 2017) > Pages 38-47                                                                          

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Volume 12, March 2017, Pages 38-47

 

Influence of calcination temperatures on structure and magnetic properties of calcium ferrite nanoparticles synthesized via sol-gel method

 N.H. Sulaiman^a, M.J. Ghazali^a, B.Y. Majlis^b, J. Yunas^b, M. Razali^a,c

^a Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia,

43600 Bangi, Malaysia

^b Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia

^c Department of Management Office, Faculty of Dentistry, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia

 

 

Abstract

Calcium ferrite (CaFe₂O₄) nanoparticles using calcium nitrate and ferric nitrate as starting materials, and supplemented with citric acid as chelating agent was carried out. This mixture was synthesized through a sol-gel method and then calcined at 550 °C, 650 °C, and 750 °C. The effects of calcination temperatures on the crystalline structure, the surface morphology and the magnetic properties of CaFe₂O₄ NPs were observed. The orthorhombic structure of calcium ferrite NPS was analysed through an X-ray diffraction. The size of calcined samples at 550 °C, 650 °C, 750 °C were (13.59 nm), (18.9 nm), and (46.12 nm), respectively. Magnetic analysis was measured by using a vibrating sample magnetometer (VSM). The magnetic saturation (Ms) of samples calcined at 550 °C was found to possess the highest value of magnetic property; 80.33 emu/g.

 

 

Keywords

Magnetic nanoparticles; Ferrite; Sol-gel method

 

 

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