Direct and inverse magnetoelectric effect in orthorhombic single crystals of Dy-=SUB=-1-x-=/SUB=-Ho-=SUB=-x-=/SUB=-MnO-=SUB=-3-=/SUB=-

Abstract

In this work, the magnetoelectric response in a series of Dy1-xHoxMnO3 crystals with substitution x from 0 to 0.4 was investigated. The measurement results showed that, as x increases, a decrease in both the polarization Pa and the magnitude of the susceptibility of the inverse magnetoelectric effect αba is observed. In addition, the field Hb increases, at which the P_c-> Pa transition is observed, and the temperature range of the existence of the magnetoelectric response decreases. Thus, an increase in the substitution x suppresses the magnetoelectric effect in this series of compounds. The measurement results also indirectly indicate the prolongation of the Pa state and, consequently, of the magnetic state with a cycloid lying in the ab-plane by an external electric field Ea. The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No.20-42-243008. Keywords: multiferroics, magnetoelectric effect, phase transition, ferroelectricity.

Ferroelectric hysteresis and magnetoelectric effect in orthorhombic Dy-=SUB=-1-x-=/SUB=-Ho-=SUB=-x-=/SUB=-MnO-=SUB=-3-=/SUB=- single crystals

“…3 also shows the measurements of P(E) for the Dy 1−x Ho x MnO 3 sample with x = 0.3. As the chart shows, the hysteresis for this compound is not observed, meaning the suppression of ferroelectricity as the concentration of Ho 3+ ions increases; nevertheless, the given compound with x = 0.3 still had the weak direct and reverse magnetoelectric effects [16].…”

“…2, c). The latter means that the second harmonic, which is actually recorded in the experiment [15,16], cannot be explained by the polarization hysteresis.…”