Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3

Abstract

Controlling the ferroelectricity and magnetism in multiferroic materials has been an important research topic. We report the formation of a highly polarized state in multiferroic DyMnO3 single crystals which develops well above the magnetic transition temperatures, and we attribute it the thermally stimulated depolarization current effect of excess holes forming Mn4+ ions in the system. We also show that this high temperature polarized state intimately correlates with the lower temperature ferroelectric state that is induced by the incommensurate spiral magnetic order of Mn spins. This study demonstrate an efficient approach to tune the multiferroicity in the manganite system.

References in corpus (10)

• Spin current and magneto-electric effect in non-collinear magnets
• Multiferroicity, The coupling between magnetic and polarization
• Ferroelectricity in spiral magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
• Collinear-to-Spiral Spin Transformation without Changing Modulation Wavelength upon Ferroelectric Transition in Tb1-xDyxMnO3
• Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
• Dynamics of Multiferroic Domain Wall in Spin-Cycloidal Ferroelectric DyMnO${}_3$
• Magnetic field induced flop of cycloidal spin order in multiferroic TbMnO3: The magnetic structure of the P||a phase
• Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3

Cited by in corpus (8)

• Noncollinear magnetic structure and magnetoelectric coupling in buckled honeycomb Co${}_4$Nb${}_2$O${}_9$:A single crystal neutron diffraction study
• Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3
• Spin-glass behavior and pyroelectric anomalies in a new lithium-based oxide, Li3FeRuO5
• Structural, magnetic and electric polarization properties of geometrically frustrated YBaCo4O7 and DyBaCo4O7 cobaltites
• Probing Dy3+ magnetic moments in multiferroic perovskite DyMnO3 by optical spectroscopy
• Multiferroicity in the Presence of Exchange Bias: The Case of Spinel CoMn2O4
• A rock-salt type Li-based oxide, Li3Ni2RuO6, exhibiting a chaotic ferrimagnetism with cluster spin-glass dynamics and thermally frozen charge carriers
• Relaxor ferroelectric behavior and intrinsic magnetodielectric behavior near room temperature in Li2Ni2Mo3O12, a compound with distorted honeycomb and spin-chains