Enhancement of specific absorption rate in MnFe2O4/Co0.7Zn0.3Fe2O4 and MnFe2O4/Co0.5Zn0.5Fe2O4 composite nanoparticle

Abstract

We utilize an advantage of the exchange coupling between MnFe2O4 and Co0.7Zn0.3Fe2O4 or Co0.5Zn0.5Fe2O4 nanoparticles to enhance the specific absorption rate (SAR) in magnetic nanosystems for advanced magnetic hyperthermia therapy. All samples were synthesized by the hydrothermal method. We find that while the saturation magnetization (Ms) of the composite nanoparticles is slightly higher than that of their single-component, their SAR value of the composite exceeds 2 times that of the single-component.