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Crystal Research and Technology |
Cryst. Res. Technol. 43, 666 (2008) - Abstract -
Investigation of domain structures in PZNT93/7 crystals by chemical etching
Min Jin, Jiayue Xu, Aiying Wu*, Xinhua Li, Hui Shen, and Qingbo He
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
*Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, Aveiro, Portugal
| Keywords | domain structure, chemical etching technique, PZNT93/7 crystal, morphotropic phase boundary |
| PACS | 81.10.Dn, 81.70.Pg, 77.84.-s |
| DOI | 10.1002/crat.200711080 |
The domain structures in 0.93Pb (Zn1/3Nb2/3)O1/3-0.07PbTiO3 (PZNT93/7) crystals were investigated by chemical etching technique. Original antiparallel 180° domains of size 20-40 μm were observed on the surface of as-grown PZNT93/7 crystal. It was found the domain states are sensitive to the stress field induced by mechanical processing or impurities. As the composition of PZNT93/7 crystal was located near the morphotropic phase boundary, various domain configurations were observed. On the <001>-oriented wafer, the etched a- and c-domains revealed homogenous and island-like patterns. The c-domains consist of upper and lower height regions corresponding to the tail and head of the polarization, respectively.
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