Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.97.227204· OSTI ID:931863

Sergienko, Ivan A ^[1]; Sen, Cengiz ^[2]; Dagotto, Elbio R ^[1]

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1. ORNL
2. Florida State University

We show that the symmetry of the spin zigzag chain E phase of the orthorhombic perovskite manganites and nickelates allows for the existence of a finite ferroelectric polarization. The proposed microscopic mechanism is independent of spin-orbit coupling. We predict that the polarization induced by the E-type magnetic order can potentially be enhanced by up to 2 orders of magnitude with respect to that in the spiral magnetic phases of TbMnO3 and similar multiferroic compounds.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 931863
• Journal Information: Physical Review Letters, Vol. 97; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKELATES
MANGANESE OXIDES
PEROVSKITES
ORTHORHOMBIC LATTICES
POLARIZATION
SYMMETRY
FERROELECTRIC MATERIALS
MAGNETIC PROPERTIES