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Ceramics International

Mn0.5Zn0.5LaxFe2-xO4 (x = 0.0, 0.025, 0.050, 0.075 and 0.10) ferrites have been synthesized using coprecipitation method. Effect of substitution of La3+ on structural, magnetic and dielectric properties of Mn0.5Zn0.5Fe2O4 was studied. Structural properties have been investigated using X-ray diffraction (XRD) and morphological by transmission electron microscopy (TEM). XRD analysis revealed the formation of cubic spinel structure. Different structural parameters like lattice parameter, crystallite size, interionic distances, average cationic radii, bond angles and bond lengths have been calculated and compared with various theoretically predicted parameters. TEM images confirmed that particle size decreases with La content. Magnetic behavior of synthesized samples was studied employing vibrating sample magnetometer (VSM). It was noted that as x increased from 0 to 0.1, maximum magnetization showed decreasing trend from 34.57 emu/gm to 15.34 emu/gm (noted at 15000 G) and Curie temperature from 193 °C to 147 °C ...

Structural, magnetic and dielectric properties of lanthanum substituted Mn0.5Zn0.5Fe2O4