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Figure 12
P–E diagrams showing the hysteresis loops of a PIC 153 type PZT sample at different prominent temperatures: lowest and highest temperatures measured (324 K and 439 K) as well as positions of local extrema in temperature dependence (366 K, 375 K and 399 K). These temperatures are also marked with asterisks in the temperature dependence plot in Fig. 11 |
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