Investigation of domain structures in PZNT93/7 crystals by chemical etching

abstract

The domain structures in 0.93Pb (Zn(1/3)Nb(2/3))O(3)-0.07PbTiO(3) (PZNT93/7) crystals were investigated by chemical etching technique. Original antiparallel 180 degrees domains of size 20-40 mu m 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. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

keywords

SINGLE-CRYSTALS; PIEZOELECTRIC PROPERTIES; MICROSCOPY; DEPENDENCE

subject category

Crystallography

authors

Jin, M; Xu, JY; Wu, AY; Li, XH; Shen, H; He, QB

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