Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets
نویسندگان
چکیده
A series of charge-balanced Si4+-M1+,2+ (M = Mg2+, K+, Li+) substitution compositions with the chemical formulae SrFe12−2xSixMgxO19 (x 0, 0.05, 0.1, 0.2), Sr1−yFe12−ySiyKyO19 (y and SrFe12−z(Si0.6Li0.6)zO19 (z 0.2, 0.4, 0.6) were prepared using conventional ceramic processes. While sole doping Si x 0.1 (SrFe12−xSixO19 0.1)) causes a noticeable Fe2O3 phase formation, co-doping Si-Mg Si-Li allow single M-type formation up to z respectively. Notably, 2.6% increase in saturation magnetization was obtained for Si-Li-substituted SrM 0.05—that is, SrFe11.95Si0.03Li0.03O19. Enhancement magnet performance can also be achieved when anisotropic permanent magnets are fabricated based on composition The remnant magnetic flux density improved by 2.5% compared that unsubstituted (from 4207 4314 G). maximum energy product (BHmax) value increased from 4.24 4.46 M·G·Oe. enhancement is attributed MS optimal substitution. This promising result because enhanced intrinsic property improvement.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2022
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app122312295