Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Crystalline Structure Analysis
3.2. Microstucture Analysis
3.3. Magnetic Properties and Magnet Performances
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Composition | x, y, z | a (Å) | c (Å) | c/a | vol. (Å3) |
---|---|---|---|---|---|
SrFe12−2xSixMgxO19 | 0 | 5.885 | 23.055 | 3.917 | 691.50 |
0.05 | 5.879 | 23.059 | 3.922 | 690.21 | |
0.1 | 5.881 | 23.072 | 3.923 | 691.06 | |
0.2 | 5.870 | 23.092 | 3.934 | 689.02 | |
Sr1−yFe12−ySiyKyO19 | 0.05 | 5.883 | 23.079 | 3.923 | 691.74 |
0.1 | 5.882 | 23.066 | 3.921 | 691.17 | |
0.2 | 5.880 | 23.076 | 3.925 | 690.90 | |
SrFe12−z(Si0.6Li0.6)zO19 | 0.05 | 5.884 | 23.056 | 3.919 | 691.20 |
0.1 | 5.882 | 23.066 | 3.921 | 691.19 | |
0.2 | 5.881 | 23.075 | 3.924 | 691.09 | |
0.4 | 5.878 | 23.076 | 3.926 | 690.53 | |
0.6 | 5.880 | 23.083 | 3.926 | 691.18 |
Composition | x, z | ρ (g/cm3) | MS (emu/g) | HC (Oe) |
---|---|---|---|---|
SrFe12−2xSixMgxO19 | 0 | 2.75 | 72.08 | 3562 |
0.05 | 2.87 | 72.15 | 3912 | |
0.1 | 2.91 | 70.46 | 3402 | |
0.2 | 4.07 | 66.49 | 2986 | |
SrFe12−z(LizSiz)0.6O19 | 0 | 2.75 | 72.08 | 3559 |
0.05 | 3.09 | 73.92 | 3713 | |
0.1 | 3.24 | 72.36 | 3393 | |
0.2 | 3.23 | 70.5 | 3904 | |
0.4 | 3.90 | 70.7 | 3809 | |
0.6 | 3.84 | 64.15 | 3216 |
Composition | Additives | ρ (g/cm3) | Br (G) | HC (Oe) |
---|---|---|---|---|
SrFe11.95Li0.03Si0.03O19 | SrCO3 0.5wt% | 4.92 | 2629 | 2878 |
SrCO3 0.75 wt% | 4.93 | 2631 | 2554 | |
SrCO3 1 wt% | 5.04 | 2459 | 1810 | |
SrCO3 0.5 wt% + CaCO3 0.5 wt% | 5.04 | 2596 | 2129 | |
SrCO3 1 wt% + SiO2 0.5 wt% | 4.70 | 2509 | 4149 | |
SrCO3 1 wt% + Co3O4 0.5 wt% | 5.04 | 2375 | 1914 | |
CaCO3 1 wt% + SiO2 0.5 wt% | 4.80 | 2528 | 4165 | |
Sr0.8La0.2Fe11.75Co0.2Li0.03Si0.03O19 | SiO2 0.5 wt% + SrCO3 1.0 wt% | 4.68 | 2420 | 4786 |
SiO2 0.5 wt% + CaCO3 1.0 wt% | 4.92 | 2582 | 4608 |
Magnet Composition | ρ (g/cm3) | iHC (Oe) | bHC (Oe) | Br (G) | BHmax (M·G·Oe) |
---|---|---|---|---|---|
SrFe12O19 | 4.95 | 3182 | 3002 | 4207 | 4.24 |
SrFe11.95Li0.03Si0.03O19 | 4.94 | 3206 | 3009 | 4314 | 4.46 |
Sr0.8La0.2Fe11.75Co0.2Li0.03Si0.03O19 | 5.02 | 3897 | 3138 | 4293 | 3.98 |
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You, J.-Y.; Lee, K.-H.; Kang, Y.-M.; Yoo, S.-I. Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets. Appl. Sci. 2022, 12, 12295. https://doi.org/10.3390/app122312295
You J-Y, Lee K-H, Kang Y-M, Yoo S-I. Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets. Applied Sciences. 2022; 12(23):12295. https://doi.org/10.3390/app122312295
Chicago/Turabian StyleYou, Jin-Young, Kang-Hyuk Lee, Young-Min Kang, and Sang-Im Yoo. 2022. "Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets" Applied Sciences 12, no. 23: 12295. https://doi.org/10.3390/app122312295
APA StyleYou, J.-Y., Lee, K.-H., Kang, Y.-M., & Yoo, S.-I. (2022). Enhancement of the Magnetic Properties in Si4+-Li+-Substituted M-Type Hexaferrites for Permanent Magnets. Applied Sciences, 12(23), 12295. https://doi.org/10.3390/app122312295