The Results of Research of Magnetic Fluid Nanoparticles by Microscopy and X-ray Methods

This is a researching of dispersed, elemental and phase composition of magnetic fluids. Samples of magnetic fluids based on kerosene and vacuum oil are the objects of study. As the researching methods, we used scanning electron microscopy and atomic force microscopy as well as X-ray diffraction. There is a comparative analysis of data from these methods

From the Dynamic Demagnitizing Factor to the Heat Capacity of a Nanodispersed Magnetic Fluid

A technique for the measurement of the dynamic demagnetizing factor, used for the description of magnetic fluid magnetization disturbance caused by a sonic wave has been offered. The formula for the calculation of heat capacity Cp of the synthesized magnetic colloids, which includes the pa-rameter Nd has been obtained. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3365

Features of the Rotational Kinetic of Magnetic Fluid Nanoparticles

The results of theoretical and experimental studies of the effect of the perturbation of magnetization of magnetic fluid in the initial part of magnetization curve, caused by thermal oscillations in the adiabatic sound wave are considered. The measurements were carried out on the magnetic colloid samples with dif-ferent viscosity of the dispersion medium within the frequency band of 20-60 kHz. In this frequency band, studied samples are characterized by the absence of thermal relaxation of the magnetization. The compari-son of the conclusions of the model of thermal relaxation of magnetization and the experimental results makes it possible to obtain information about the features of the rheology for the nearest molecular envi-ronment of a particle − nanorheology. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3635