Studies on the multifunctional properties of lead-free (1-x) Bi Fe${}_{0.9}$Mn${}_{0.1}$O${}_3$/xLa${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ (x = 0, 0.05, 0.1) multiferroic composites

In this work, we describe systematic studies on multiferroic composites (1-x) Bi Fe${}_{0.9}$Mn${}_{0.1}$O${}_3$/xLa${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ (x = 0, 0.05, 0.1) synthesized via solid-state reaction route. Structural, dielectric, impedance, magnetic, magnetoelectric (ME), and optical properties were investigated at room temperature. X-ray diffraction (XRD) patterns show peaks corresponding to both Bi Fe${}_{0.9}$Mn${}_{0.1}$O${}_3$ (BMFO) and La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ (LSMO) phases and confirms the formation of composites. The frequency responses of dielectric constant and AC conductivity of the samples enhances with increasing content of LSMO and Nyquist plots have been investigated at room temperature. M-H loops at room temperature show enhancement in magnetization values on the addition of LSMO. Furthermore, the ME responses of the samples were analyzed and ME coupling coefficients were calculated for all the samples. Optical band gap and luminescence properties of the materials suggest their applications in optoelectronic devices.