Magnetoelastic effects in multiferroic YMnO3

Structural coherence and ferroelectric order in nanosized multiferroic YMnO3

S. Tripathi,1 V. Petkov,1,* S. M. Selbach,2 K. Bergum,2 M.-A. Einarsrud,2 T. Grande,2 and Y. Ren3 1Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, USA 2Department of Materials Science and Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway 3Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA (Receive...

Direct Observation of Multiferroic Vortex Domains in YMnO3

Topological vortices with swirling ferroelectric, magnetic and structural anti-phase relationship in hexagonal RMnO3 (R = Ho to Lu, Y, and Sc) have attracted much attention because of their intriguing behaviors. Herein, we report the structure of multiferroic vortex domains in YMnO3 at atomic scale using state-of-the-art aberration-corrected scanning transmission electron microscopy (STEM). Two...

Field-induced linear magnetoelastic coupling in multiferroic TbMnO3

N. Aliouane,1 D. N. Argyriou,1 J. Strempfer,2 I. Zegkinoglou,2 S. Landsgesell,1 and M. v. Zimmermann3 1Hahn-Meitner-Institut, Glienicker Strasse 100, Berlin D-14109, Germany 2Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany 3Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22603 Hamburg, Germany Recei...

"Oxygen-vacancy effect on structural, magnetic, and ferroelectric properties in multiferroic YMnO3 single crystals"

Atomic displacements at and order of all phase transitions in multiferroic YMnO3 and BaTiO3.

Coordinate analysis of the multiple phase transitions in hexagonal YMnO(3) leads to the prediction of a previously unknown aristotype phase, with the resulting phase-transition sequence: P6(3)'cm'(e.g.) <--> P6(3)cm <--> P6(3)/mcm <--> P6(3)/mmc <--> P6/mmm. Below the Néel temperature T(N) approximately = 75 K, the structure is antiferromagnetic with the magnetic symmetry not yet determined. Ab...