2005/11/07 by L. C. Chapon, P. G. Radaelli, G. R. Blake +5 · 10 citations
Chemistry · Materials Science · Physics and Astronomy · #Antiferromagnetism #Chemistry #Condensed matter physics #Diffraction #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics and related materials #Neutron diffraction #Nuclear magnetic resonance #Optics #Physics #Polarization (electrochemistry) #Quantum mechanics #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.96.097601
10 pages, 3 figures, 1 table
arxiv created 2005/11/07 · openalex publication_date 2006/03/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables us to predict the polarization based entirely on the observed magnetic structure. Our data accurately reproduce the temperature dependence of the spontaneous polarization, particularly its sign reversal at the commensurate-incommensurate transition.