Comparison between magnetic properties of CoFe₂O₄ and CoFe₂O₄/polypyrrole nanoparticles

Abstract

CoFe 2 O 4 /polypyrrole composite nanoparticles were synthesized using a high energy ball mill. Mössbauer and Fourier transform infrared spectroscopies, magnetization measurements and transmission electron microscopy were used for the characterization of samples. Specific loss power ( SLP ) was determined by exposing nanoparticles to an alternating magnetic field. Some changes in coercivity were observed and explained comparing CoFe 2 O 4 nanoparticles withCoFe 2 O 4 /polypyrrole composite nanoparticles.