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Title: Enhanced Ferroelectric Polarization by Induced Dy Spin Order in Multiferroic DyMnO{sub 3}

Abstract

Neutron powder diffraction and single crystal x-ray resonant magnetic scattering measurements suggest that Dy plays an active role in enhancing the ferroelectric polarization in multiferroic DyMnO{sub 3} above T{sub N}{sup Dy}=6.5 K. We observe the evolution of an incommensurate ordering of Dy moments with the same periodicity as the Mn spiral ordering. It closely tracks the evolution of the ferroelectric polarization. Below T{sub N}{sup Dy}, where Dy spins order commensurately, the polarization decreases to values similar for those of TbMnO{sub 3}. The higher P{sub s} found just above T{sub N}{sup Dy} arises from the contribution of Dy spins so as to effectively increase the amplitude of the Mn spin spiral.

Authors:
; ; ;  [1]; ;  [2];  [3]
  1. Hahn-Meitner-Institut, Glienicker Strasse 100, D-14109 Berlin (Germany)
  2. Hahn-Meitner-Institut, c/o BESSY, D-12489 Berlin (Germany)
  3. ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11, 0QX (United Kingdom)
Publication Date:
OSTI Identifier:
20955430
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevLett.98.057206; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DYSPROSIUM COMPOUNDS; EVOLUTION; FERROELECTRIC MATERIALS; MANGANESE OXIDES; MONOCRYSTALS; NEUTRON DIFFRACTION; PARTICLE TRACKS; PERIODICITY; POLARIZATION; SPIN

Citation Formats

Prokhnenko, O., Landsgesell, S., Aliouane, N., Argyriou, D. N., Feyerherm, R., Dudzik, E., and Chapon, L. C. Enhanced Ferroelectric Polarization by Induced Dy Spin Order in Multiferroic DyMnO{sub 3}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.057206.
Prokhnenko, O., Landsgesell, S., Aliouane, N., Argyriou, D. N., Feyerherm, R., Dudzik, E., & Chapon, L. C. Enhanced Ferroelectric Polarization by Induced Dy Spin Order in Multiferroic DyMnO{sub 3}. United States. doi:10.1103/PHYSREVLETT.98.057206.
Prokhnenko, O., Landsgesell, S., Aliouane, N., Argyriou, D. N., Feyerherm, R., Dudzik, E., and Chapon, L. C. Fri . "Enhanced Ferroelectric Polarization by Induced Dy Spin Order in Multiferroic DyMnO{sub 3}". United States. doi:10.1103/PHYSREVLETT.98.057206.
@article{osti_20955430,
title = {Enhanced Ferroelectric Polarization by Induced Dy Spin Order in Multiferroic DyMnO{sub 3}},
author = {Prokhnenko, O. and Landsgesell, S. and Aliouane, N. and Argyriou, D. N. and Feyerherm, R. and Dudzik, E. and Chapon, L. C.},
abstractNote = {Neutron powder diffraction and single crystal x-ray resonant magnetic scattering measurements suggest that Dy plays an active role in enhancing the ferroelectric polarization in multiferroic DyMnO{sub 3} above T{sub N}{sup Dy}=6.5 K. We observe the evolution of an incommensurate ordering of Dy moments with the same periodicity as the Mn spiral ordering. It closely tracks the evolution of the ferroelectric polarization. Below T{sub N}{sup Dy}, where Dy spins order commensurately, the polarization decreases to values similar for those of TbMnO{sub 3}. The higher P{sub s} found just above T{sub N}{sup Dy} arises from the contribution of Dy spins so as to effectively increase the amplitude of the Mn spin spiral.},
doi = {10.1103/PHYSREVLETT.98.057206},
journal = {Physical Review Letters},
number = 5,
volume = 98,
place = {United States},
year = {Fri Feb 02 00:00:00 EST 2007},
month = {Fri Feb 02 00:00:00 EST 2007}
}