| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1463639 | Ceramics International | 2009 | 4 Pages |
Abstract
High density (>99.5%) Al2O3/LiTaO3 (ALT) composite was obtained by hot pressing at 1300 °C/25 MPa in nitrogen atmosphere. The microstructure, which included a domain structure in LiTaO3 grains, was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Most of the domains observed in LiTaO3 grains of the Al2O3/LiTaO3 (ALT) composites belong to a non-180° type domain, which cannot exist in LiTaO3 single crystals. This non-symmetry domain microstructure belongs to ferroelectric twinning with {1¯012} twin composition plane. The non-180° domains formation mechanism was proposed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Youfeng Zhang, Yu Zhou, Dechang Jia, Qingchang Meng, Yangai Liu, Hua Ke,