Size Distribution Function of Magnetite Nanoparticles in Disperse Systems

作者：Ali zade R A^*

来源：Inorganic Materials, 2008, 44(10): 1105-1109.

DOI：10.1134/S0020168508100154

A size distribution function of magnetite nanoparticles has been selected among known distribution functions that well represent the frequency polygon of the nanoparticles. Normal and lognormal distribution functions are shown to provide more accurate representations for the initial and final portions of the size distribution of magnetite nanoparticles. We have determined the transition diameter of magnetite nanoparticles which corresponds to a transition from a normal to a lognormal distribution function and have constructed a composite distribution function consisting of normal and lognormal distribution functions, which accurately represents the size distribution of the magnetite nanoparticles. The distribution moments and magnetization curve calculated using this distribution function agree well with the moments calculated using the frequency polygon of the magnetite nanoparticles and with the experimentally determined magnetization curve.

• 出版日期2008-10