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- Title
Incomplete ferroelectricity in SrTi<sup> 18</sup>O<sub> 3</sub>.
- Authors
Bussmann-Holder, A.; Bishop, A. R.
- Abstract
Motivated by recent experiments demonstrating suppression of ferroelectricity with pressure in SrTi18O3, 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 Tc 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.
- Subjects
FERROELECTRIC crystals; PHASE transitions; CURIE temperature; NONLINEAR statistical models; POLARIZABILITY (Electricity)
- Publication
European Physical Journal B: Condensed Matter, 2006, Vol 53, Issue 3, p279
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2006-00373-8