Morphology and magnetic properties of NiFe2O4 powders prepared in molten sodium chloride

NiFe2O4 powders were successfully fabricated at different temperatures by using molten salt method and their structure and magnetic properties were investigated by using x‐ray diffractometer, scanning electron microscope and vibrating sample magnetometer. The x‐ray diffractometer result shows that a...

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Bibliographic Details
Published in:Materialwissenschaft und Werkstofftechnik 2021-06, Vol.52 (6), p.677-681
Main Authors: Ni, J.L., Lin, X., Wang, Q., Sun, C.Y., Du, F.Y., Liu, X.S., Feng, S.J.
Format: Article
Language:English
Subjects:
Coercivity
crystal morphology
Einzelspinell
Electron microscopes
growth from melt
Kristallmorphologie
Magnetic materials
Magnetic properties
Magnetic saturation
Magnetische Werkstoffe
Magnetometers
Molten salts
Morphology
Nickel ferrites
Oxide
oxides
Schmelzewachstum
single spinel
Sintering (powder metallurgy)
Sodium chloride
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Summary:NiFe2O4 powders were successfully fabricated at different temperatures by using molten salt method and their structure and magnetic properties were investigated by using x‐ray diffractometer, scanning electron microscope and vibrating sample magnetometer. The x‐ray diffractometer result shows that all powders are single spinel phase, scanning electron microscope image indicates that the grain mainly has an octagonal shape and the average particle size increases with increasing sintering temperature. The vibrating sample magnetometer data reveal that saturation magnetization of NiFe2O4 powders increases, while coercivity decreases with increasing sintering temperature. The NiFe2O4 powder was successfully prepared by the molten salt method at different temperatures and its structure and magnetic properties were studied. The study discovered that all the powders are spinel phase, and the crystal grains are mainly octagonal. The average particle size and saturation magnetization increase with temperature, but the coercivity decreases.
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.202000334