ENHANCEMENT OF SPECIFIC ABSORPTION RATE IN Co0.7Zn0.3Fe2O4 and Co0.5Zn0.5Fe2O4 COMPOSITE NANOPARTICLES

Pham Hong Nam, T. N. Bach, N. H. Nam, N. V. Quynh, N. X. Truong, D. H. Manh, L. H. Nguyen, P. T. Phong

Abstract


We report the advantage of the exchange coupling between a magnetically soft (MnFe2O4) and magnetically hard (Co0.7Zn0.3Fe2O4 and Co0.5Zn0.5Fe2O4) magnetic phase to increase the specific absorption rate (SAR) in magnetic inductive heating. All samples were synthesized by hydrothermal method. While the saturation magnetization (Ms) of two composite nanoparticles is approximately 1.1 times higher the Ms of single-component, the SAR is more 2 times than those values of single-component.


Keywords


specific absorption rate, composite nanoparticles, exchange coupling

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DOI: https://doi.org/10.15625/2525-2518/59/1/15118

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