Incomplete ferroelectricity in SrTi18O3

Bussmann-Holder, A.; Bishop, A. R.

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Incomplete ferroelectricity in SrTi¹⁸O₃

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Bussmann-Holder, A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Bussmann-Holder, A., & Bishop, A. R. (2006). Incomplete ferroelectricity in SrTi¹⁸O₃. European Physical Journal B, 53(3), 279-282.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FC64-6

Abstract

Motivated by recent experiments demonstrating suppression of
ferroelectricity with pressure in (SrTiO3)-O-18, 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.