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Charge Order in LuFe2O4 : Antiferroelectric Ground State and Coupling to Magnetism

Year: 2008

Type: article

Abstract: X-ray scattering by multiferroic LuFe2O4 is reported. Below 320 K, superstructure reflections indicate an incommensurate charge order with propagation close to (1/3 1/3 3/2). The corresponding charge configuration, also found by electronic structure calculations as most stable, contains polar Fe/O double layers with antiferroelectric stacking. Diffuse scattering at 360 K, with (1/3 1/3 0) propagation, indicates ferroelectric short-range correlations between neighboring double layers. The temperature dependence of the incommensuration indicates that charge order and magnetism are coupled.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.101.227601

Authors: M. Angst, R. P. Hermann, A. D. Christianson, M. D. Lumsden, C. Lee, M.-H. Whangbo, J.-W. Kim, P. J. Ryan, S. E. Nagler, W. Tian, R. Jin, B. C. Sales, D. Mandrus

Institutions: Oak Ridge National Laboratory, Forschungszentrum Jülich, University of Liège, North Carolina State University, Ames National Laboratory

Language: English

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1964385668

FWCI: 4.476

Cites: 22

Cited by: 130

Related to: 10