Elastic behavior of PbTiO{sub 3} crystals near ferroelectric phase transition
Journal Article
·
· Crystallography Reports
OSTI ID:255078
- Rostov State Univ., Rostov-na-Donu (Russian Federation)
Domain structures arising in multiaxial ferroelectric crystals below the Curie point (T{sub c}) are generally a superposition of the 180{degrees} ferroelectric domains and 180{degrees} mechanical domains (twins). The latter domains are characterized by spontaneous strains directed along different crystallographic axes and form the so called ferroelastic phase within the crystal bulk. The twins in the ferroelectric phase are packed in such a way that the net strain (taking into account the sign of strain in each domain) vanishes in the crystals. The simplest example of such packing has the phase divided into 90{degrees} twins. In this case, the spontaneous strain along the axis normal to the twinning plane is lacking in the crystals. The 90{degrees} twins are typical of perovskite crystals. Therefore, this paper deals with PbTiO{sub 3} crystals. 7 refs., 2 figs.
- OSTI ID:
- 255078
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 2 Vol. 40; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:5573341