Dresden 2011 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 48: SKM-SYDT: Diffusionless Transformations in Magnetic and Ferroelectric Bulk and Thin Films (jointly with MM, DS, DF)
MA 48.2: Hauptvortrag
Donnerstag, 17. März 2011, 11:00–11:30, TRE Ma
Intermediate Phases in Perovskite Solid Solutions — •Ian Reaney1, Clive Randall2, and David Woodward3 — 1Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, UK — 2Department of Physics, University of Warwick, Gibbet Hill Road,Coventry CV4 7AL, UK — 3144 MRL Bldg., Penn State University,University Park, PA 16802, USA
The intermediate monoclinic (M) phase in Pb(ZrxTi1-x)O3 (PZT) inbetween rhombohedral (R) and tetragonal (T) displacive variants is considered as a high profile example of a more general phenomenon in which low symmetry intermediate phases are stabilised between higher symmetry displacive variants. In the case of the M phase, the order parameter is dominated by polarisation but similar situations are reported where the order parameter is dominated by strain, amplitude of octahedral rotation or combinations thereof. This article presents examples of intermediate phases and discusses their structures and functional properties.