EVIDENCING THE MAGNETOELECTRIC COUPLING IN BI1-XNDXFEO3 COMPOSITIONS THROUGH FERROIC CHARACTERIZATIONS

• DOI: 10.37572/EdArt_20122152116

• Palavras-chave: BiFeO3 composites; A-site substitutions; ferric properties

• Keywords: BiFeO3 composites; A-site substitutions; ferric properties

• Abstract:

  The study of multiferroic crystalline materials is of great technological and academic interest due to the correlation between their ferroelectric and ferromagnetic properties. In this work, ferroic properties of Nd-modified (A-site substitution) BiFeO3 (BNFO) compounds were studied. Ceramic compositions of Bi1-xNdxFeO3 (x = 0.10 and 0.20) were obtained through a route that included high-energy ball milling, isostatic pressing (to obtain the ceramic shape) and sintering in air. The X-ray diffraction data showed that these compositions have a distorted perovskite structure, with relative densities reaching 93%. Dielectric measurements showed a frequency independent step-like relaxation for the Bi0.9Nd0.1FeO3 composition and indicatives indications of thermally activated conduction processes for the Bi0.8Nd0.2FeO3 composition. Magnetic studies showed a breakdown of the typical magnetic cycloidal structure of BiFeO3.

   

• Número de páginas: 11