Magnetic nanocolloids: physical properties and poli-dispersion system magnetization

IPUL researches ferrite nanoparticle spherically stabilized nanocolloids within organic media fluids with the main purpose of creating new heat controlled magnetic liquids with especially significant pyromagnetic properties and intense alternating magnetic field energy absorption. For this purpose the usual magnetite nanoparticles Mn and Co ferrites are also synthesized and more complex Mn-Zn-Ca, Zn-Cu, Gd-Mn-Zn and other composite ferrite nanoparticles. Much of attention is directed towards colloidal variance nanoparticle geometrical size distribution function analysis. Special magneto-granulometry methods has been designed for determining variance of the composition   1st image. Lake-shore vibration magnetometer for colloid magnetism measurements and magneto-granulometry analysis Using a variety of colloid magnetism theoretical models (as the simplest considering nanoparticle (ansambļa  dažādu subfrakciju aditīvu Lanževena līkņu superpoziciju)? ) from colloid integral magnetization measurement, nanoparticle geometrical size distribution fuction is determined. Using liquids ultracentrifugation and high- gradient magnetic seperation, colloid sample subfractions are seperated for other physical research or specific uses. Additional information about nanocolloidic particles and their (ansambļu)? physical properties is gained using colloid composite magnetization research within high- frequency magnetic fields, also using dynamic light dispersion and magneto optical phenomena (relaxation)? measurements.   2nd image. Heat- sensitive composite ferrit colloid magnetization