Multiferroicity in LaFeO3 synthesized by high-energy ball milling
Abstract
In this work the multiferroic properties of LaFeO3 synthesized by high-energy ball milling assisted by annealing is presented. X-ray diffraction (XRD) results show the formation of single-phase orthorhombic structure for the sample annealed at 1073 K. Magnetic hysteresis loops show the transition from ferromagnetic order to G-antiferromagnetic order, related to the transformation from amorphous to crystalline phase during the annealing. The Néel temperature value of the single-phase LaFeO3 obtained was 700 K, lower than previously reported. Dielectric behavior at room temperature of LaFeO3 sample shows a behavior in good agreement with Maxwell-Wagner effect. Furthermore, it was found that AC conductivity (sAC) increases linearly with frequency. All results show that LaFeO3 synthesized by high-energy ball milling assisted with annealing possess a multiferroic behavior.
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