## Dependence of large strains on the field magnitude signal

3.4. Dependence of large strains on NVP-BEZ235 field magnitude, signal frequency and temperature

Fig. 7. (a) Unipolar stain curves measured under electric fields of different magnitudes at 1 Hz for x = 0.4 and x = 0.55 ceramics and the dS/dE value of the lower-half S–E curve during loading for the x = 0.4 sample, (b) and (c) the normalized strain d33* and the strain hysteresis of (0.65 − x)BNT–0.35PT–xPMN ceramics varying with the magnitude of applied electric fields, respectively.Figure optionsDownload full-size imageDownload as PowerPoint slide

Fig. 8. Frequency dependence of unipolar strains for (0.65 − x)BNT–0.35PT–xPMN ceramics: (a) x = 0.2, (b) x = 0.4 and (c) x = 0.55; (d) the normalized strain d33* and the strain hysteresis for different samples as a hair root function of measuring frequency.Figure optionsDownload full-size imageDownload as PowerPoint slide