INFLUENCE OF PHASE TRANSITIONS IN THE FERRITE-GARNET FILM DOMAIN STRUCTURE ON THE MOTION FEATURES OF MAGNETICALLY ACTIVATED CELLS

Phase transitions in lattices of cylindrical magnetic domains in a ferrite-garnet film with uniaxial anisotropy, induced by a magnetic field perpendicular to the film plane, were experimentally studied. It’s shown that the structure of domain boundaries determines the field stability interval of the lattice of cylindrical magnetic domains and determines the type of these phase transitions. It is shown that when transporting magnetically labeled cells of different sizes over a lattices of cylindrical magnetic domains in alternating meander-type control fields, it is possible to organize cell sorting by size in the region of increasing the lattice period of a lattices of cylindrical magnetic domains.