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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.
Sulaimana,
M.J. Ghazalia, B.Y.
Majlisb, J. Yunasb,
M. Razalia,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
Full Text
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