Enhancement of magnetoelectric coupling in Cr doped Mn2O3

Abstract

The effect of Cr doping with nominal compositions Mn2-xCrxO3 (0 less than equal to x less than equal to 0.10) has been undertaken to investigate its effect on structural, magnetic, dielectric and magnetoelectric properties. The Cr doping transformed the room temperature crystal structure from orthorhombic to cubic symmetry. Similar to alpha-Mn2O3, two magnetic transitions have been observed in the Cr doped samples. The effect of Cr doping is significant on the low temperature transition i.e. the lower magnetic transition shifted towards higher temperature (25 K for pristine to 40 K for x=0.10) whereas the high temperature transition decreases slightly with increasing Cr content. A clear frequency independent transition is observed in complex dielectric measurements for all compositions around high temperature magnetic ordering. Interestingly, the magnetodielectric behaviour enhanced enormously approx 21% with Cr substitution as compared to pristine Mn2O3.

arXiv comment13 pages, 2 tables, 4 figures

References in corpus (12)

• Magnetically driven ferroelectric order in Ni${}_3$V${}_2$O${}_8$
• Relaxor ferroelectricity and colossal magnetocapacitive coupling in ferromagnetic CdCr2S4
• Ferroelectric polarization flop in a frustrated magnet MnWO${}_4$ induced by magnetic fields
• Field-induced Polar Order at the Néel Temperature of Chromium in Rare-earth Orthochromites: Interplay of Rare-earth and Cr Magnetism
• Non-$d^0$ Mn-driven ferroelectricity in antiferromagnetic BaMnO${}_3$
• A New Multiferroic Material: MnWO4
• Recent Progress of Multiferroic Perovskite Manganites
• Ordering process and ferroelectricity in a spinel derived from FeV2O4
• Multiglass properties and magnetoelectric coupling in uniaxial anisotropic spin-cluster-glass Fe2TiO5
• Multiferroic properties and magnetic structure of Sm1-xYxMnO3
• Multiferroicity and magnetoelastic coupling in alpha-Mn2O3: A binary perovskite
• Impact of the various spin and orbital ordering processes on multiferroic properties of orthovanadate DyVO3

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