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Effect of pH and annealing temperature on the structural and magnetic properties of cerium-substituted yttrium iron garnet powders produced by the sol-gel method


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Fig. 1

X-ray diffraction patterns of the garnet powders produced with a precursor solution at pH 2.45 and annealed at temperatures from 800 °C to 1400 °C.
X-ray diffraction patterns of the garnet powders produced with a precursor solution at pH 2.45 and annealed at temperatures from 800 °C to 1400 °C.

Fig. 2

X-ray diffraction patterns of the garnet powders annealed at 1400 °C obtained from solutions of pH values between 1.1 and 2.9.
X-ray diffraction patterns of the garnet powders annealed at 1400 °C obtained from solutions of pH values between 1.1 and 2.9.

Fig. 3

SEM images of the garnet samples heat treated at (a) 800 °C, (b) 1100 °C and (c) 1400 °C.
SEM images of the garnet samples heat treated at (a) 800 °C, (b) 1100 °C and (c) 1400 °C.

Fig. 4

VSM results of samples annealed between 800 and 1400 °C: (a) hysteresis curves and (b) coercivity and saturation magnetization values against annealing temperature.
VSM results of samples annealed between 800 and 1400 °C: (a) hysteresis curves and (b) coercivity and saturation magnetization values against annealing temperature.

Fig. 5

Crystallite size and magnetization at different pH values of initial solutions annealed at 1400 °C.
Crystallite size and magnetization at different pH values of initial solutions annealed at 1400 °C.
eISSN:
2083-134X
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Materials Sciences, other, Nanomaterials, Functional and Smart Materials, Materials Characterization and Properties