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Chemical Control of Superparamagnetic Properties of Magnesium and Cobalt Spinel Ferrite Nanoparticles through Atomic Level Magnetic Couplings
Abstract
A correlation between the electron spin−orbital angular momentum coupling and the superparamagnetic properties has been established in MgFe 2 O 4 and CoFe 2 O 4 spinel ferrite nanoparticles. The contribution to the magnetic anisotropy from the Fe 3+ lattice sites is almost the same in both nanocrystallites as neutron diffraction studies have shown a similar cation distribution in these two types of spinel ferrite nanoparticles. Due to the strong magnetic couplings from Co 2+ lattice sites, the blocking temperature of CoFe 2 O 4 nanoparticles is at least 150 deg higher than the same sized MgFe 2 O 4 nanoparticles. Mössbauer spectroscopy studies demonstrate that the magnetic anisotropy of CoFe 2 O 4 nanoparticles is higher than that of the same size MgFe 2 O 4 nanoparticles. These studies indicate that the superparamagnetic properties of nanoparticles can be controlled through chemically adjusting the magnetic anisotropy energy.
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Cited by
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Samuel, O., Othman, M. H. D., Kamaludin, R., Sinsamphanh, O., Abdullah, H., Puteh, M. H., Kurniawan, T. A., Li, T., Ismail, A. F., Rahman, M. A., et al. (2022) · Journal of Environmental Management · doi:10.1016/j.jenvman.2022.114556 · Cited by 129
Waag, F., Gökce, B., Kalapu, C., Bendt, G., Salamon, S., Landers, J., Hagemann, U., Heidelmann, M., Schulz, S., Wende, H., et al. (2017) · Scientific Reports · doi:10.1038/s41598-017-13333-z · Cited by 69
Metadata
- Authors
- Liu, C., Zou, B., Rondinone, A. J., & Zhang, Z. J.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2000-06-16
- Volume
- 122
- Issue
- 26
- Pages
- 6263-6267
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2053789455
- Cited by
- 459
- References
- 0
- FWCI
- 4.81
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liu, C., Zou, B., Rondinone, A. J., & Zhang, Z. J. (2000). Chemical Control of Superparamagnetic Properties of Magnesium and Cobalt Spinel Ferrite Nanoparticles through Atomic Level Magnetic Couplings. Journal of the American Chemical Society. https://doi.org/10.1021/ja000784g
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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