Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells
Abstract
:1. Introduction
2. Materials and Methods
2.1. Synthesis of NPs
2.2. Morphostructural Properties
2.3. Magnetic Properties
3. Results
3.1. Morphostructural Properties
3.2. Magnetic Anisotropy
3.3. Intra- and Interparticle Interactions
- Fit of superparamagnetic M-H curve with Langevin–Chantrell method [47];
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | dXRD, nm | Normal | Log-Normal | ||
---|---|---|---|---|---|
dTEM, nm | σTEM | dTEM, nm | σTEM | ||
CFO | 7.2 ± 0.4 | 8.3 ± 0.1 | 0.25 ± 0.03 | 8.3 ± 0.1 | 0.13 ± 0.02 |
CFO/NFO | 8.9 ± 0.9 | 9.3 ± 0.1 | 0.31 ± 0.03 | 9.5 ± 0.1 | 0.15 ± 0.02 |
CFO/NiO | 7.8 ± 0.7 | 9.3 ± 0.1 | 0.38 ± 0.03 | 9.6 ± 0.2 | 0.19 ± 0.02 |
Sample | <TB>, K | σmag | MS, Am2kg−1 | MR/MS | µ0HC, T |
---|---|---|---|---|---|
CFO | 201 ± 8 | 0.76 ± 0.05 | 84 ± 4 | 0.61 ± 0.01 | 1.2 1 |
CFO/NFO | 259 ± 10 | 0.50 ± 0.05 | 75 ± 4 | 0.76 ± 0.01 | 1.5 ± 0.1 |
CFO/NiO | 200 ± 8 | 0.65 ± 0.05 | 80 ± 4 | 0.74 ± 0.01 | 2.0 ± 0.1 |
Sample | dTEMlog, nm | dMAGI, nm | dMAGII, nm | dMAGIII, nm | σTEMlog | σmagII |
---|---|---|---|---|---|---|
CFO | 8.3 ± 0.1 | 6.9 ± 0.2 | 5.5 ± 0.2 | 6.9 | 0.13 ± 0.02 | 0.22 ± 0.02 |
CFO/NFO | 9.5 ± 0.1 | 7.3 ± 0.2 | 6.0 ± 0.2 | 7.7 | 0.15 ± 0.02 | 0.20 ± 0.02 |
CFO/NiO | 9.6 ± 0.2 | 6.5 ± 0.5 | 5.4 ± 0.2 | 6.9 | 0.19 ± 0.02 | 0.23 ± 0.02 |
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Omelyanchik, A.; Villa, S.; Singh, G.; Rodionova, V.; Laureti, S.; Canepa, F.; Peddis, D. Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells. Magnetochemistry 2021, 7, 146. https://doi.org/10.3390/magnetochemistry7110146
Omelyanchik A, Villa S, Singh G, Rodionova V, Laureti S, Canepa F, Peddis D. Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells. Magnetochemistry. 2021; 7(11):146. https://doi.org/10.3390/magnetochemistry7110146
Chicago/Turabian StyleOmelyanchik, Alexander, Silvia Villa, Gurvinder Singh, Valeria Rodionova, Sara Laureti, Fabio Canepa, and Davide Peddis. 2021. "Magnetic Properties of Bi-Magnetic Core/Shell Nanoparticles: The Case of Thin Shells" Magnetochemistry 7, no. 11: 146. https://doi.org/10.3390/magnetochemistry7110146