Effects of magnetic annealing on structure and multiferroic properties of pure and dysprosium substituted BiFeO3

► BiFeO3 and Bi0.85Dy0.15FeO3 materials were fabricated under high magnetic fields. ► The structure of BiFeO3 material is largely affected by magnetic annealing. ► Magnetic annealing had almost no impacts on magnetic properties of these two materials. ► Significant changes of ferroelectric properties are observed in both materials after magnetic field annealing.