期刊
PHYSICAL REVIEW B
卷 94, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.054115
关键词
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资金
- National key Basic Research Program of China [2013CB632900]
- National Natural Science Foundation of China [11374010, 11434009]
- Department of Energy, Basic Energy Sciences [DE-AC02-06CH11357]
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 paper, the local twin domains and tip-voltage-induced domain switching of the M-C phase in Pb(Mg1/3Nb2/3)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 the (001)(C) face, the specificM(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 degrees 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.
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