Local twin domains and tip-voltage-induced domain switching of monoclinicMCphase inPb(Mg1/3

Abstract

The monoclinic (M) phases in high-performance relaxor-based ferroelectric single crystals have been recognized to be a vital structural factor for the outstanding piezoelectric property.However, due to the complexity of the structure in M phases, the understanding about it is still limited. In this work, the local twin domains and tip-voltage-induced domain switching of monoclinic M C phase in Pb(Mg 1/3 Nb 2/3 )O 3 -0.34PbTiO 3 (PMN-0.34PT) single crystal have been intensively investigated by Piezoresponse Force Microscopy (PFM). By theoretically analyzing the experimental patterns of domain walls on (001) C face, the specific M C twin domains in the initial annealed state of a selected area have been clarified, and the polarization orientation of the M C phase in this sample is determined to be at an angle of 29° to the <001> C directions. In addition, based on the evolution of domains and the motion of domain walls under the step-increased PFM tip DC voltage (V dc ), the switching process and features of different types of M C domain variants are visually revealed.2

Anisotropic domain switching in Pb(Mg1/3Nb2/3)O3‐0.30PbTiO3 single crystals with rhombohedral structure

“…Observing along the direction of electric field, the traces of these 71° walls on the (001) plane make angles of 135° or 45° with respect to the [100] direction (see Figure A‐B). Thus, our observations that the projection of domain walls on the (001) plane along 45° or 135° are consistent with the theoretical prediction . It should be noted that domain switching from r3 + to r1 − will also bring out the 135° domain patterns, whereas switching from r4 + to r2 − will form 45° domain patterns.…”

“…Thus, our observations that the projection of domain walls on the (001) plane along 45°or 135°a re consistent with the theoretical prediction. 40,41 It should be noted that domain switching from r3 + to r1 À will also bring out the 135°domain patterns, whereas switching from r4 + to r2 À will form 45°domain patterns. Accordingly, this phenomenon remains the same after many electric cycles in [001]-oriented PMN-0.30PT crystals.…”

Multi‐scale domain structure observation and piezoelectric responses for [001]‐oriented PMN‐33PT single crystal

“…Previous PLM studies on [001]-oriented PMN-33PT single crystal demonstrated that the monoclinic phase belongs to M C . 20,31 The two contoured regions are designated as "M" in order to simplify the labeling of different domain variants in the M C phase, as described in Section III (4). After the determination of the phase symmetry, the tip of the PFM probe is located at the contoured regions and PFM images can be obtained.…”

Structural and electrical properties of ZnO‐modified (1−x)Pb(Mg1/3Nb2/3)O3−xPbTiO3 ceramics with wide MPB regions

“…Accordingly, it is interesting and necessary to broaden the MPB region of the PMN‐ x PT system from the viewpoints of either science or application. In our opinion, it is possible to broaden the MPB region of PMN‐ x PT because other reports postulate a monoclinic (M) phase, which serves as an intermediate phase between the R and T phases, in the MPB region . This outcome implies that, if the R→M or T→M phase transition near the MPB regions occurs through composition or structural design, the MPB region can be broadened.…”