2007/11/12 by R. A. Ewings, A. T. Boothroyd, D. F. McMorrow +4 · 2 citations
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Ferroelectric and Piezoelectric Materials #Multiferroics and related materials #Underwater Acoustics Research #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.104415
published as Phys. Rev. B 77, 104415 (2008) · 8 pages, 8 figures
arxiv created 2007/11/12 · openalex publication_date 2008/03/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
X-ray resonant scattering has been used to measure the magnetic order of the Dy ions below 40\phantom\rule0.3em0exK in multiferroic DyMn2O5. The magnetic order has a complex behavior. There are several different ordering wave vectors, both incommensurate and commensurate, as the temperature is varied. In addition a nonmagnetic signal at twice the wave vector of one of the commensurate signals is observed, the maximum intensity of which occurs at the same temperature as a local maximum in the ferroelectric polarization. Some of the results, which bear resemblance to the behavior of other members of the RMn2O5 family of multiferroic materials, may be explained by a theory based on so-called acentric spin-density waves.