Synthesis and Study of Ferroic Properties BiFe_1-yCo_yO₃ Compositions

Abstract

The study of multiferroic materials is of great technological and academic interest because the correlation between ferroelectric and ferromagnetic properties. Among these materials, the compounds with perovskite structures such as those based on BiFeO₃ are extensively studied. In this study BiFe_1-yCo_yO₃ ceramics were processed by high-energy ball-milling followed by isostatic pressing to shape the ceramics and, finally, fast sintering in an air atmosphere. X-ray diffraction data pointed out to compositions with rhombohedral symmetry and space group R3c. Dielectric and magnetic measurements were performed to study the ferroic properties of obtained compositions. Thermally activated conduction processes were observed from dielectric permittivity and loss tangent measurements; magnetic studies showed a breakdown of the magnetic cycloidal structure typical of BiFeO₃.

Keywords:

• BiFeO₃
• fast sintering
• multiferroic properties