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Structures, Spectra, Morphologies, and Magnetic Properties of Pr3+-Substituted Ba Hexaferrites.
- Source :
- Journal of Superconductivity & Novel Magnetism; Sep2022, Vol. 35 Issue 9, p2473-2484, 12p
- Publication Year :
- 2022
-
Abstract
- Pr-doped M-type barium ferrite with a composition of Ba<subscript>1−x</subscript>Pr<subscript>x</subscript>Fe<subscript>12</subscript>O<subscript>19</subscript> (0.00 < x < 0.25) was prepared via solid-state sintering combined with high-energy ball milling. The structures, spectra, morphologies, and magnetic properties of Pr<superscript>3+</superscript>-substituted Ba hexaferrites were analyzed herein. Under high-energy ball milling, the material produces crystal vacancy defects for elemental doping. The X-ray diffraction results showed that the hexagonal crystal structure was affected when the Pr content (x) was > 0.20. The GSAS refinement results show that the synthesized samples were good. The scanning electron microscopy results and Fourier transform infrared (FT-IR) spectra of the tetrahedral and octahedral sites (FT-IR result of the Fe–O bond = 601 and 448 cm<superscript>−1</superscript> peaks, respectively) of the prepared material proved the formation of a hexagonal crystal structure. The magnetic properties of the samples were measured using a vibrating sample magnetometer at room temperature, and the obtained results demonstrated that the coercivity increased with an increase in the doping amount (from 3815.03 at x = 0 to 4600.56 kOe at x = 0.25). At the same time, the saturation magnetization maintained its high value (> 72.568 emu/g), which is beneficial for preparing permanent magnets. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15571939
- Volume :
- 35
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Superconductivity & Novel Magnetism
- Publication Type :
- Academic Journal
- Accession number :
- 158999051
- Full Text :
- https://doi.org/10.1007/s10948-022-06294-6