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Influence of Fe Content on Lattice, Structural and Magnetic Analyses of BaFe2+2Fe3+16-xO27± Hexaferrites Prepared by Facile Ceramic Route Methodology.
- Source :
- Journal of Electronic Materials; Jan2022, Vol. 51 Issue 1, p141-149, 9p
- Publication Year :
- 2022
-
Abstract
- Fe<subscript>2</subscript>W-type ferrite BaFe<superscript>2+</superscript><subscript>2</subscript>Fe<superscript>3+</superscript><subscript>16-x</subscript>O<subscript>27±</subscript> (x =−0.8, −0.4, 0.0, 0.4, 0.8, 1.2) fine powders and magnets were synthesized by a facile ceramic route. The lattice and microstructure of the fine powders were studied by x-ray diffraction (XRD). The results show that a single magnetoplumbite structure is obtained under the condition of Fe change (x =−0.8, −0.4, 0.0, 0.4, 0.8, 1.2). The morphology of the sintered magnet was studied by scanning electron microscopy (SEM). The influence of iron content on the magnetic characteristics of BaFe<superscript>2+</superscript><subscript>2</subscript>Fe<superscript>3+</superscript><subscript>16-x</subscript>O<subscript>27±</subscript> was systematically studied by controlling the pre-sintering temperature of 1300°C. The change in the remanence (B<subscript>r</subscript>) of BaFe<subscript>2</subscript><superscript>2+</superscript>Fe<subscript>16-x</subscript><superscript>3+</superscript>O<subscript>27±</subscript> magnets with different iron content first increased and then decreased, which confirmed that the change trend of the B<subscript>r</subscript> was consistent with the variation in the saturation magnetization (M<subscript>s</subscript>). Meanwhile, the coercivity (H<subscript>cj</subscript>) and (H<subscript>cb</subscript>) of the magnets was consistent with the change characteristics of the coercive force (H<subscript>c</subscript>) of magnetic powder. At iron change (x) = −0.4, M<subscript>s</subscript>, B<subscript>r</subscript>, H<subscript>c</subscript>, H<subscript>cj</subscript>, H<subscript>cb</subscript>, and maximum energy product ((BH)<subscript>max</subscript>) reach maximum. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03615235
- Volume :
- 51
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Electronic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 154174280
- Full Text :
- https://doi.org/10.1007/s11664-021-09194-y