Size and Time Rescaling at the Paraelectric to Ferroelectric Phase Transition in BaTiO$_3$

Details Size and Time Rescaling at the Paraelectric to Ferroelectric Phase Transition in BaTiO$_3$ Size and Time Rescaling at the Paraelectric to Ferroelectric Phase Transition in BaTiO$_3$

2009-01-29

arxiv.org/abs/0901.4560v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

We describe length and time rescaling across the paraelectric to ferroelectric phase transition in BaTiO$_3$. Small ferroelectric clusters are unable to grow in the paraelectric phase and exist for a short period of time only. The onset of the phase transition invokes a rescaling of both size and time lenghts as necessary ingredients for ferroelectricity to come into existence. The growing of ferroelectric domains involves correlated chains of Ti-O dipoles, which causes domain wall rigidity and domain shape stability. Ferroelectric nanodomains may host islands of opposite polarization (antiferroelectric defects), which appear as an intrinsic feature of the growing BaTiO$_3$ ferroelectric material

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