Low temperature and high magnetic field dependence and magnetic properties of nanocrystalline cobalt ferrite
(2014) Journal of Superconductivity and Novel Magnetism — Vol. 27, n° 7, p. 1677-1681 (2014)
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- Abstract
- The DC magnetic hysteresis loop measurements were carried out for temperatures varying from 5 to 300 K over a field range of ±10 T on nanocrystalline ( 35 nm) cobalt ferrite samples (crystallized to Fd 3 m Fd\bar {3} m space group with cubic symmetry) to validate the law of approach at low temperature for the nanocrystalline cobalt ferrite. A magnetocrystalline anisotropy constant and saturation magnetization have been obtained by analyzing the magnetization curve in saturation using the "law of approach (LA) to saturation." The magnetocrystalline anisotropy constant is found to be almost constant in the temperature range of 5 to 150 K due to the freezing of spin at low temperature. Also, spin freezing leads to a decrease of coercivity with the increase in the temperature.
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Kumar, L., Kumar, P., Srivastava, S. K., & Kar, M. (2014). Low temperature and high magnetic field dependence and magnetic properties of nanocrystalline cobalt ferrite. Journal of Superconductivity and Novel Magnetism, 27(7), 1677-1681. https://doi.org/10.1007/s10948-014-2519-y (Original work published 2014)