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Influence of pH Adjustment Parameter for Sol–Gel Modification on Structural, Microstructure, and Magnetic Properties of Nanocrystalline Strontium Ferrite
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Influence of pH Adjustment Parameter for Sol–Gel Modification on Structural, Microstructure, and Magnetic Properties of Nanocrystalline Strontium Ferrite
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Influence of pH Adjustment Parameter for Sol–Gel Modification on Structural, Microstructure, and Magnetic Properties of Nanocrystalline Strontium Ferrite
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Journal Article
Influence of pH Adjustment Parameter for Sol–Gel Modification on Structural, Microstructure, and Magnetic Properties of Nanocrystalline Strontium Ferrite
2018
Overview
Synthesis of nanocrystalline strontium ferrite (SrFe
12
O
19
) via sol–gel is sensitive to its modification parameters. Therefore, in this study, an attempt of regulating the pH as a sol–gel modification parameter during preparation of SrFe
12
O
19
nanoparticles sintered at a low sintering temperature of 900 °C has been presented. The relationship of varying pH (pH 0 to 8) on structural, microstructures, and magnetic behaviors of SrFe
12
O
19
nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning microscope (FESEM), and vibrating sample magnetometer (VSM). Varying the pH of precursor exhibited a strong effect on the sintered density, crystal structure and magnetic properties of the SrFe
12
O
19
nanoparticles. As the pH is 0, the SrFe
12
O
19
produced relatively largest density, saturation magnetization,
M
s
, and coercivity,
H
c
, at a low sintering temperature of 900 °C. The grain size of SrFe
12
O
19
is obtained in the range of 73.6 to 133.3 nm. The porosity of the sample affected the density and the magnetic properties of the SrFe
12
O
19
ferrite. It is suggested that the low-temperature sintered SrFe
12
O
19
at pH 0 displayed
M
s
of 44.19 emu/g and
H
c
of 6403.6 Oe, possessing a significant potential for applying in low-temperature co-fired ceramic permanent magnet.
Publisher
Springer US,Springer Nature B.V,SpringerOpen
