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(a) HRXRD rocking curve of the (001) PZT reflection. Inset is a scan of the epitaxial PZT film on a STO substrate. (b) scan pattern of asymmetrical (101) reflection of epitaxial PZT film (upper panel) and STO substrate (lower panel).
(a) Pyroelectric current response with changing temperature as a function of time. (b) Temperature dependence of pyroelectric coefficient of the PZT/STO: Nb heterostructure. The inset shows current variation for the whole cooling-heating cycle.
hysteresis loops of a PZT thin film on Nb-doped STO substrate measured at 260 K (dashed) and 360 K (solid). Inset (1) shows the temperature dependence of remanent polarization in the PZT films. Inset (2) is a close up of the region.
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