Spin-induced multiferroicity in the binary perovskite manganite Mn2O3

Abstract

The ABO3 perovskite oxides exhibit a wide range of interesting physical phenomena remaining in the focus of extensive scientific investigations and various industrial applications. In order to form a perovskite structure, the cations occupying the A and B positions in the lattice, as a rule, should be different. Nevertheless, the unique binary perovskite manganite Mn2O3 containing the same element in both A and B positions can be synthesized under high-pressure high-temperature conditions. Here, we show that this material exhibits magnetically driven ferroelectricity and a pronounced magnetoelectric effect at low temperatures. Neutron powder diffraction revealed two intricate antiferromagnetic structures below 100 K, driven by a strong interplay between spin, charge, and orbital degrees of freedom. The peculiar multiferroicity in the Mn2O3 perovskite is ascribed to a combined effect involving several mechanisms. Our work demonstrates the potential of binary perovskite oxides for creating materials with highly promising electric and magnetic properties.

Enhancement of magnetoelectric coupling in Cr doped Mn2O3

“…Recently, we have explored the multiferroics and ME coupling in -Mn 2 O 3 [14]. Cong et al also observed spin induced multiferroicity in the high temperature and high pressure phase -Mn 2 O 3 [17]. The pristine -Mn 2 O 3 is orthorhombic at room temperature [18,14] and undergoes cubic to orthorhombic transition at 308 K [19,20].…”

Single-phase multiferroics: new materials, phenomena, and physics

“…These observations are similar to the measured results on Ni 3 V 2 O 8 and MWO 4 , and the existence of multiple multiferroic phases may be utilized for unusual ME memory applications [ 53 , 54 ]. A long list of other type-II multiferroics, including α-NaFeO 2 [ 55 ], Mn 2 O 3 [ 56 ], (La, Bi)Mn 3 Cr 4 O 12 [ 57 , 58 ], Ni 3 TeO 6 [ 59 , 60 ], (Fe, Mn) 2 Mo 3 O 8 [ 61–63 ], Co 4 Nb 2 O 9 [ 64 ], Mn 2 MnWO 6 [ 65 ], RFe 3 (BO 3 ) 4 [ 66–68 ], KCu 3 As 2 O 7 (OD) 3 [ 69 ], NaFeSi 2 O 6 [ 70 ], In 2 NiMnO 6 [ 71 ], and so on. Certainly, this list should not exclude materials other than oxides, and compounds with other anions such as S and Se have been revealed to show type-II multiferroicity too, including CaOFeS [ 72 ], MnSb 2 S 4 [ 73 ], BaFe 2 Se 3 [ 74 ], Cu 3 Bi(SeO 3 ) 2 O 2 Cl [ 75 ], CsCuCl 3 [ 76 ], and CuBr 2 [ 77 ].…”

Neodymium‐doping concentration induced face‐shared to corner‐shared transition in Strontium Cobaltite

“…Transition metal oxides (TMOs) are a material class with abundant and novel physical properties, such as superconductivity, [1] multiferroicity, [2,3] magnetoresistance, [4] and others. Within TMOs, transition metal ions are in the form of tetrahedrons (BO4) or octahedrons (BO6) due to the different valence states of the cations and/or the concentration of oxygen vacancies.…”