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Jung-tak Jang, Hyunsoo Nah, Jae-Hyun Lee, Seung Ho Moon, Min Gyu Kim, and Jinwoo Cheon*
Critical Enhancements of MRI Contrast and Hyperthermic Effects by Dopant-Controlled Magnetic Nanoparticles
Angew. Chem. Int. Ed., 48 (7), 1234-1238
Critical Enhancements of MRI Contrast and Hyperthermic Effects by Dopant-Controlled Magnetic Nanoparticles
Angew. Chem. Int. Ed., 48 (7), 1234-1238
Date: Feb 2, 2009
The incorporation of Zn2+ dopants in tetrahedral sites leads to the successful magnetism tuning of spinel metal ferrite nanoparticles (see picture). (Zn0.4Mn0.6)Fe2O4nanoparticles exhibit the highest magnetization value among the metal ferrite nanoparticles. Such high magnetism results in the largest MRI contrast effects (r2=860 mm−1 s−1) reported to date and also huge hyperthermic effects.
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