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Piezoelectric properties of polymer/lead-free ceramic composites

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Academic year: 2021

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Figure 1. SEM images of NN NW ’s (a) and NN P’s (b).
Figure 3. XRD patterns of NN NW ’s (a) and NN P’s (b) at RT.
Figure 4. XRD patterns of NN powder at different temperatures. ( ■) and () represent the tetragonal and orthorhombic crystalline structure, respectively.
Figure 6. Variation of the piezoelectric coef ficient d 33 versus volume fraction ( f) of NN

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