Magnetoelectric coupling at microwave frequencies observed in bismuth ferrite-based multiferroics at room temperature. (20th February 2023)

• Record Type: Journal Article
• Authors: Zhang, Man; Koval, Vladimir; Shi, Yu; Yue, Yajun; Jia, Chenglong; Wu, Jiagang; Viola, Giuseppe; Yan, Haixue
• Is Part Of: Journal of materials science & technology. Volume 137(2023)
• Page Start: 100
• Page End: 103
• Publication Date: 2023-02-20
• Subjects: BiFeO3 -- Ferroelectric -- Ferromagnetic -- Room temperature multiferroics -- Magnetoelectric coupling; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2022.07.040
• Languages: English
• ISSNs: 1005-0302

Abstract

Highlights: Room-temperature single phase multiferroic materials was obtained. Magnetoelectric coupling was observed at microwave (GHz) frequency. The coupling suggests a dynamic interaction between magnetic moments and ferroelectric polarization. Abstract: 0.63Bi0.99 La0.01 Fe1- x Mn x O3 -0.33BaTiO3 -0.04Na0.5 Bi0.5 TiO3 ( x = 0.10, 0.15, and 0.20) ceramics have been prepared by solid state reaction, and their structural, ferroelectric, ferromagnetic, piezoelectric, and magnetoelectric properties are studied. Except for the x = 0.2 composition, the X-ray diffraction and SEM-EDX analysis on the sintered ceramics show that the samples are single-phase, rhombohedral perovskites at room temperature. The introduction of Mn ions leads to a small deterioration in the ferroelectric and piezoelectric properties, whilst the room-temperature magnetization increases upon doping. The optimal multiferroic properties are obtained for the x = 0.15 composition. The magnetoelectric coupling in this sample was evidenced by the anomalies occurring simultaneously in the dielectric permittivity and magnetic permeability spectral profiles in the microwave region. Such a coupled phenomenon can be attributed to a dynamic interaction between magnetic moments and ferroelectric polarization.