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- Title
In situ observation of two-step 90° domain reversal with different characteristics in PMN–38%PT single crystal.
- Authors
Zhao, Erding; Fang, Ze; Cheng, Mingqiang; Qin, Yalin; Jiang, Xiaodong; Li, Xiaobing; Zhang, Yongcheng
- Abstract
Domain structures and their reversal process of (010)-cut Pb(Mg1/3Nb2/3)O3–38%PbTiO3 single crystal were in situ investigated under varying electric fields by polarized light microscope. High-density needlelike ferroelectric microdomains were observed in macrodomains. When an electric field along [101] was applied on the crystal, macrodomain walls keep immobility, while the vertical microdomains first flip to the transverse direction and then to the vertical direction again. The two-step 90° domain reversal exhibits quite different characteristics. The first step finished quickly at a low electric field and in a narrow electric field range, leading to high polarization current. The second step happened slowly at the high electric field and in a wide electric field range, and no obvious polarization current was observed. Two-step domain reversal mechanism was investigated, and our findings will help in understanding the excellent properties of relaxor Pb(Mg1/3Nb2/3)O3–PbTiO3 single crystal.
- Subjects
LEAD titanate; SINGLE crystals; POLARIZING microscopes; ELECTRIC fields
- Publication
Journal of Materials Science, 2020, Vol 55, Issue 19, p8041
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-020-04580-z