Abstract
La-doped barium ferrite/poly(3-methylthiophene)(LB/P3MTH) composites have been successfully synthesized by in suit chemical polymerization with ferrite chloride (FeCl3) as an initiator. The composites structure is investigated by X-ray diffraction analysis (XRD) and Fourier transform infrared spectroscopy, and the morphology of samples is observed by transmission electron microscopy (TEM). Magnetic properties of the composites are tested by vibrating sample magnetometer. XRD analysis shows that La3+ has got into the lattice of Ba-ferrite and replaces the Ba2+ and that the best La3+ amount of La-doped Ba-ferrite is not more than 0.08. La-doped Ba-ferrite particles are coated with poly (3-methylthiophene). TEM image reveals that La-doped Ba-ferrite particles have spherical morphology and are agglomerated due to the coated polymer. P3MTH covers the ferrite surface and has crystallite boundaries, which influences the composites’ physical and chemical properties.
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