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Figure 3
(a) Lateral piezoresponse image (1 × 1 µm) of a 23 nm K0.75Na0.25NbO3 epitaxial layer grown on a (110) TbScO3 substrate showing a periodic domain pattern with ∼46 nm periodicity. (b) The 0° domain variant and (c) the 90° domain variant are shown schematically. The corresponding in-plane components of the ferroelectric polarization vector (black arrows) in the individual domains indicate 180° domain walls within one variant. (d), (e) The epitaxial relationships between the K0.75Na0.25NbO3 epitaxial layer (represented by the pseudocubic unit cells) and the underlying (110) TbScO3 substrate for (d) the 0° domain variant and (e) the 90° domain variant.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 50| Part 2| April 2017| Pages 519-524
https://doi.org/10.1107/S1600576717000905
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