| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1802184 | Journal of Magnetism and Magnetic Materials | 2009 | 4 Pages |
Abstract
This work presents a study of Na0.5Bi0.5TiO3 (NBT) by transmission electron microscopy in the 20–370 °C temperature range. A new orthorhombic intermediate phase between the rhombohedral and the tetragonal phases is proposed to account for the occurrence of 12(oee) superstructure spots. The phase transition from the rhombohedral to the orthorhombic phase occurs via a modulated phase formed by rhombohedral blocks and orthorhombic sheets. It is shown that these latter represent rhombohedral (0 1 0) twin planes. The modulated phase is proposed to explain the antiferroelectric and relaxor behaviors of NBT.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
V. Dorcet, G. Trolliard, P. Boullay,