Magnetic and physicochemical aspects of the biomedical magnetic fluid technology

N. A. Brusentsov - M. V. Lukashevich - V. V. Gogosov

Abstract
Biomedical applications of dextran-ferrite require that the magnetite, activated ferrite, dextran-ferrite microspheres and the magnetic fluids meet specific qualitative, quantitative and storage criteria. Data concerning these criteria and requirements have been reported. The microcrystallinity, twophase structure, granular uniformity, magnetic stability, chemical composition, and saturation magnetization are the most significant physicochemical properties of the initial materials and DF itself to be controlled at the manufacturing and storage. For magnetite. FeO / Fe₂O₃/H₂O, the diameter of microcrystals can range from 11 to 25 nm; the contents of FeO from 25 to 46