Abstract
Praseodymium (III)-doped M-type SrPrxFe12-xO19 (x = 0.00, 0.25, 0.50, 0.75, 1.00) hexa-ferrites were synthesized via micro-emulsion process followed by annealing of samples at 800 degrees C for 4 h. The effects of praseodymium particles on properties such as electrical, magnetic, and dielectric were studied. Via TGA the phase formation was observed to be started at 900 degrees C, and weight reduced to 5.27% at 1010 degrees C. Through X-ray diffraction (XRD), hexagonal structure was confirmed and structural properties were studied: the crystalline size, lattice constant, bulk and X-rays densities, i.e., 4.446 nm, 5.90 A, 4.167 g center dot cm(-3) and 6.46 g center dot cm(-3), respectively. The cation dispersion and shifting of frequencies were observed by FTIR at frequencies 430-590 cm(-1) because of dopant of higher radii. Surface morphology, grain structure, and porosity were studied by scanning electron microscopy (SEM). Electrical properties were determined by impedance spectroscopy. The impact of Pr3+ doping on distinct metrics, i.e. dielectric constants, dielectric loss, tan loss, A.C conductivity, was studied: 1.890, 0.023, 0.012, 0.001, respectively. The effects of Pr3+ doping on retentivity, coercivity, saturation magnetization, and anisotropy were investigated by the vibrating sample magnetometer (VSM). The increase in saturation and remanence is due to the increase of Pr3+ that retuned extra Fe3+ ions from the lattice plot. The prepared materials offer valuable potential for applications of high-density recording medium applications and high-frequency devices.