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Abstracts Using hydrothermal method, CoFe2O4 (hard ferrite) and MnFe2O4 (soft ferrite) nanoparticles of size up to 20 nm were synthesized and the viscosities were controlled using various concentrations of agar. The… Click to show full abstract
Abstracts Using hydrothermal method, CoFe2O4 (hard ferrite) and MnFe2O4 (soft ferrite) nanoparticles of size up to 20 nm were synthesized and the viscosities were controlled using various concentrations of agar. The hydrodynamic diameter of these particles was measured and fitted to a lognormal distribution and the results showed their polydispersity is very narrow. From the calorimetric measurements of the particles stabilized in agar solutions, we have demonstrated that at a given frequency, the dependence of the specific loss power of magnetic fluids on the viscosity is in good agreement with the theoretical predictions made in the earlier studies.
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2017
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