Investigation on magnetic properties of FeSiAl/SrFe12O19 composites

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 12; pp. 16956 - 16960
• Main Authors: Ni, J. L., Zhu, S. J., Feng, S. J., Kan, X. C., Liu, X. S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2021; Springer Nature B.V
• Subjects: Anisotropy; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Core loss; Current loss; Eddy current testing; Eddy currents; Hysteresis loops; Magnetic properties; Magnetic saturation; Magnetism; Materials Science; Morphology; Optical and Electronic Materials
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-06259-w

FeSiAl/SrFe 12 O 19 composites with different SrFe 12 O 19 contents were prepared, and their microstructure magnetic properties were studied. It can be seen from the SEM morphology picture that the SrFe 12 O 19 powder is relatively fine, filling the gaps between the FeSiAl spherical particles. The SrFe 12 O 19 ferrite has a higher resistivity than FeSiAl alloy and can be used as an insulating agent. Hysteresis loop results show that the saturation magnetization of all composites is relatively high (up to 163 emu/g). Magnetic loss analysis shows that the hysteresis loss increases with the increase in the SrFe 12 O 19 content, which may be caused by the high anisotropy of SrFe 12 O 19 powder. The eddy current loss is the smallest when the SrFe 12 O 19 content is 10.7 wt%. Our research illustrates that proper addition of SrFe 12 O 19 content can reduce eddy current loss and SrFe 12 O 19 can be used as an insulating agent for soft magnetic composites.