Levitin Yevgen, Koval Alla, Vedernikova Irina, Ol'khovik Larissa, Tkachenko Mykola
National University of Pharmacy, Pushkinskaya St. 53, 61002 Kharkov, Ukraine.
Acta Pol Pharm. 2011 Jul-Aug;68(4):549-53.
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.
已研制出锌取代磁铁矿的纳米分散粉末。其功能特性（生物相容性、分散性、磁态）使其适用于医学和生物技术领域的验证。在低于各向异性场的磁场中研究的磁化强度温度依赖性特征表明，在4.2 - 150 K的温度范围内，3 - 13 nm的颗粒实现了从磁稳定状态到超顺磁状态的转变。这反映了小颗粒磁性的特殊性。
