Dielectric, magnetic, and magnetoelectric characteristics of (Sm _0.25 Ho _0.25 Yb _0.25 Lu _0.25 )FeO ₃ high‐entropy ceramics

Abstract (Sm 0.25 Ho 0.25 Yb 0.25 Lu 0.25 )FeO 3 high‐entropy ceramics were prepared and characterized. Dense ceramics with single phase structure in space group Pbnm were obtained, in which the homogeneous distribution of the rare‐earth elements was determined. The suppressed leakage current was achieved, and a high dielectric peak with strong frequency dispersion was detected. Weak ferromagnetic behavior was determined and the M‐H hysteresis loop changed from the pinched ones to the saturated ones with decreasing temperature, while the M r increased monotonically. Moreover, a linear magnetoelectric coefficient up to 0.75 mV/cm Oe was achieved in the present high‐entropy ceramics.