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Domain wall observation and dielectric anisotropy in PZN–PT by SPM |
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| Authors: | Makoto Iwata Kohei Katsuraya Ikuo Suzuki Masaki Maeda Naohiko Yasuda Yoshihiro Ishibashi |
| Affiliation: | aDepartment of Engineering Physics, Electronics and Mechanics, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan bElectrical and Electric Engineering Department, Gifu University, Gifu 501-1193, Japan cFaculty of Business, Aichi Shukutoku University, Nagakute-cho, Aichi 480-1197, Japan |
| Abstract: | The voltage drops on the surfaces in PZN–20% PT and PZN–30% PT were investigated using the electrostatic force microscopy (EFM). It was found that the voltage drop per unit length in the a-domain is larger than the one in the c-domains on the sample surface with the ferroelastic domain wall structure, implying that the dielectric constant perpendicular to the spontaneous polarization is larger than the one parallel to the spontaneous polarization in the vicinity of the morphotropic phase boundary (MPB). Dielectric anisotropy in the vicinity of the MPB was discussed. |
| Keywords: | MPB AFM Relaxor Perovskite Ferroelectrics Phase transition |
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