Incomplete ferroelectricity in SrTi 18 O 3

A. Bussmann-Holder () and A. R. Bishop

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 53, issue 3, 279-282

Abstract: Motivated by recent experiments demonstrating suppression of ferroelectricity with pressure in SrTi 18 O 3 , the dynamics of the phase transition mechanism are reinvestigated within a nonlinear polarizability model. For temperatures far above the phase transition polar micro domains are formed which increase in size with decreasing temperature to freeze out at T c without forming long range order. Experimentally, soft mode dynamics are simultaneously observed, evidencing that displacive and order/disorder features coexist. In the ferroelectric phase both components persist whereby an incomplete and inhomogeneous ferroelectric state is formed. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 77.80.Bh Phase transitions and Curie point; 77.80.-e Ferroelectricity and antiferroelectricity; 05.45.-a Nonlinear dynamics and chaos (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00373-8

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