Incommensurate magnetic structure in the orthorhombic perovskite ErMnO_3

Abstract

By combining dielectric, specific heat, and magnetization measurements and high-resolution neutron powder diffraction, we have investigated the thermodynamic and magnetic/structural properties of the metastable orthorhombic perovskite ErMnO_3 prepared by high-pressure synthesis. The system becomes antiferromagnetically correlated below 42 K and undergoes a lock-in transition at 28 K with propagation wave vector (0,k_b,0), which remains incommensurate at low temperature. The intercorrelation between the magnetic structure and electric properties and the role of the rare earth moment are discussed.

4 pages, 3 figures

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• Phase transitions and rare-earth magnetism in hexagonal and orthorhombic DyMnO${}_3$ single crystals
• The effect of antisite disorder on magnetic and exchange bias properties of Gd-substituted Y${}_2$CoMnO${}_6$ double perovskite
• Spin and orbital ordering in TlMnO3: Neutron diffraction study
• Modeling and Physics of Multiferroic Perovskite Manganites