Synthesis and Physical Properties of La sub(0.53)Ca sub(0.26)Ba sub(0.21)Mn sub(0.77)Ti sub(0.21)Zr sub(0.02) O sub(3) Multiferroic Material

This work reports the synthesis, structural characterization, ferroelectric and magnetic behavior of the La sub(0.53)Ca sub(0.26)Ba sub(0.21)Mn sub(0.77)Ti sub(0.21)Zr sub(0.02)O sub(3) (LCBMTZ) complex perovskite. The material is obtained by the solid state reaction method. Rietveld refinement of X-ray diffraction experiments shows that the material crystallizes in a tetragonal perovskite structure, space group P4mm (#99). Impedance spectroscopy measurements give evidence of ferroelectricity with high values of electric permittivity ( epsilon '=119.2) and electrical polarization curves confirm it. Measurements of magnetic hysteresis loops at 10 and 150 K reveal a ferromagnetic behavior. On the other hand, the comparison of the FC and ZFC magnetization and resistivity measurements shows different magnetic regimes associated with changes in the resistivity. The analysis of these curves suggests the existence of magnetoelectric coupling in temperature regimes below 228.09 K.