Magnetic and magneto-optical properties of Fe₃O₄ and NiFe₂O₄ nanoparticles

Abstract

In this paper, we present study of the measurement peculiarities of magnetic Fe₃O₄ and NiFe₂O₄ nanoparticles characteristics. The nanoparticles possess ferromagnetic properties. The aim of the work was to determine the magnetic parameters of such nanoparticles and to investigate influence of magnetic field and interaction between individual nanoparticles on the value of their magnetic characteristics. Atom force and magnetic microscopy, method of magnetic susceptibility measuring, magneto-optical technique and method of ferromagnetic resonance were used in the research.