Figure- Schematic perovskite structure of PbTiO3,
with cubic (C) structure in the paraelectric state (Spontaneous polarization =
0) (unstressed) and tetragonal (T) structure in the ferroelectric state
(Spontaneous polarization ≠0)(stressed ).
Reference :L.
B. Kong et al., Waste Energy Harvesting, Lecture Notes in Energy 24, DOI:
10.1007/978-3-642-54634-1_2, Springer-Verlag Berlin Heidelberg 2014.
Figure - Schematic
showing the response of a piece of piezoelectric ceramics to external
mechanical stimulation.
Reference :L.
B. Kong et al., Waste Energy Harvesting, Lecture Notes in Energy 24, DOI:
10.1007/978-3-642-54634-1_2, Springer-Verlag Berlin Heidelberg 2014.
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