Bonny, V.Bonin, M.Sciau, P.Schenk, K. J.Chapuis, G.2006-03-072006-03-072006-03-07199710.1016/S0038-1098(97)00022-7https://infoscience.epfl.ch/handle/20.500.14299/227304Diffraction above room temperature, on powders and crystals of Pb(Fe0.5Nb0.5)O-3, using X-rays and synchrotron radiation, led to a novel and consistent picture of the symmetry of the phases in this disordered perovskite. The compound is a monoclinic ferroelectric at 293 K, undergoes a structural transition to another ferroelectric, tetragonal state at about 355 K and finally transforms into a cubic form at approximately 376 K. (C) 1997 Elsevier Science Ltd. [References: 23]FerroelectricsX-ray scatteringPhase transitionsSynchrotron radiation.Pb(fe0.5nb0.5)o3 crystalsCeramicsPb(fe1/2nb1/2)o3Ferroelectrics.Applied physics/condensed matter/materials science.text::journal::journal article::research article