Incommensurate magnetic structure in the orthorhombic perovskite ErMnO_3

Details Incommensurate magnetic structure in the orthorhombic perovskite ErMnO_3 Incommensurate magnetic structure in the orthorhombic perovskite ErMnO_3

2007-07-03

arxiv.org/abs/0707.0507v2

Phys. Rev. B 76, 060402(R) (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.76.060402

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.

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