Critical Enhancements of MRI Contrast and Hyperthermic Effects by Dopant‐Controlled Magnetic Nanoparticles

Abstract Doped up : The incorporation of Zn 2+ dopants in tetrahedral sites leads to the successful magnetism tuning of spinel metal ferrite nanoparticles (see picture). (Zn 0.4 Mn 0.6 )Fe 2 O 4 nanoparticles exhibit the highest magnetization value among the metal ferrite nanoparticles. Such high magnetism results in the largest MRI contrast effects ( r 2=860 mm −1 s −1 ) reported to date and also huge hyperthermic effects. magnified image