Self-propagating high temperature synthesis and magnetic properties of Ni0.35Zn0.65Fe2O4 powders |
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| Authors: | Yao Li Jiupeng Zhao Jiecai Han |
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| Affiliation: | (1) Centre for Composite Materials, Harbin Institute of Technology, 150001 Harbin, People’s Republic of China;(2) Department of Applied Chemistry, Harbin Institute of Technology, 150001 Harbin, People’s Republic of China |
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| Abstract: | Ni-Zn ferrite powders were synthesized by self-propagating high temperature synthesis (SHS) method. X-ray diffraction, TEM
and vibrating sample magnetometry (VSM) were used to characterize the phase composition, microstructure and magnetic properties
of the combustion products. The effect of the combustion temperature (T
c), the major parameter of the SHS process, on particle size, phase composition and magnetic properties of the products was
also studied. The results showed that particle size grew with the increasing combustion temperature. The maximum saturation
magnetization,M
s, increased with combustion temperature indicating the growth of grain size and high degree of ferritization, while residual
magnetization,M
r, and coercive force,H
c, decreased. Compared with other methods, Ni0.35Zn0.65Fe2O4 ferrite powders with improved magnetic properties can be obtained by SHS at 1000°C. |
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| Keywords: | SHS Ni-Zn ferrite powders combustion temperature particle size magnetic properties phase composition |
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