title: Physical and technological principles of creating biocompatible superparamagnetic particles.
abstract: Nanodisperse powder of zinc-substituted magnetite has been developed. Functional characteristics (biocompatibility, dispersion, magnetic state) allow to recommend it for approbation in medical and biologic technologies. The character of the temperature dependences of magnetization investigated in the magnetic fields lower than the anisotropy field indicates that transfer from the magnetically stable state into the superparamagnetic state was realized for particles of 3-13 nm in the temperature range of 4.2-150 K. It reflects specificity of small particles magnetism.
authors.affiliation: National University of Pharmacy, Pushkinskaya St. 53, 61002 Kharkov, Ukraine.
authors.forename: Yevgen
authors.initials: Y
authors.lastname: Levitin
authors.forename: Alla
authors.initials: A
authors.lastname: Koval
authors.forename: Irina
authors.initials: I
authors.lastname: Vedernikova
authors.forename: Larissa
authors.initials: L
authors.lastname: Ol'khovik
authors.forename: Mykola
authors.initials: M
authors.lastname: Tkachenko
mesh_terms: D001672:Biocompatible Materials; D008280:Magnetics; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D008854:Microscopy, Electron; D010316:Particle Size; D013678:Technology, Pharmaceutical / Q000379:methods*; D013696:Temperature; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D058185:Magnetite Nanoparticles; D017967:Zinc Compounds