fig5
From: Microstructure and piezoelectric properties of AC poled relaxor-PbTiO3 perovskite single crystals
Figure 5. SEM images of (A) OPP-DCP and; (B) OPP-ACP SCs in close proximity to the top (upper images) and bottom (lower images) electrodes. It is notable that in all SCs, there were approximately 20-25 μm of indistinct microstructure layers situated just below these electrodes. SEM: Scanning electron microscopy; OPP: optimum polarization; DCP: direct-current poling; ACP: alternating-current poling; SC: single crystal.
