Geometric consideration applied for domain width and sample thickness determination.
Correlation between domain width and specimen thickness.
Correlation between micro- and nanodomain sizes is shown. The lines are a guide for the eyes.
TEM bright field micrograph of PZT45∕55 showing a bimodal domain distribution of lamellar 90° domains, viewed along . The bimodal distribution is recognizable by the alternation of broad and narrow microdomains.
BF micrograph of specimen PZT52∕48 showing the appearance of fine nanodomains marked with white arrows.
BF image of sample PZT52.5∕47.5 showing lamellar of 90° domains with nanodomains. The nanodomain walls have an angle of approximately 45° with respect to the microdomain walls.
BF micrograph of specimen PZT53∕47 showing a lamellar domain configuration with coarse nanodomains.
BF image of PZT53.5∕46.5. This composition revealed the broadest microdomain size of average of , containing a mixture of fine and coarse nanodomains. Coarse nanodomains exhibit a width of approximately .
BF micrograph of specimen PZT54∕46 showing a complex domain configuration, viewed along .
BF image of PZT54.5∕45.5 evince a bimodal domain distribution with increasing nanodomain density. The inset shows the selected area diffraction pattern of the bottom left region of the BF micrograph. Spot splitting along  is visible.
BF micrographs of PZT55∕45. Samples with this composition predominantly consist of two domain types. (a) showing a lamellar domain configuration with a high density of fine nanodomains which exhibit nearly no bimodal domain distribution. The microdomain walls are slightly irregular. (b) showing irregular microdomain walls with wavy character.
BF micrographs of PZT60∕40 (a) showing a lamellar domain configuration with broad and narrow domains not strictly alternating. (b) showing a herringbonelike domain configuration, which is characteristic for rhombohedral compositions.
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