Polarization rotation and multiphase coexistence for Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals at the morphotropic phase boundary under electric loading | |
Fang, F. ; Luo, Xu ; Yang, W. | |
2010-10-12 ; 2010-10-12 | |
关键词 | crystal structure dielectric polarisation domain boundaries lead compounds piezoelectric materials piezoelectricity solid-state phase transformations space groups PIEZOELECTRIC PROPERTIES DOMAIN-STRUCTURE FIELD TRANSFORMATION GROWTH PBTIO3 Physics, Condensed Matter |
中文摘要 | In situ observations of the domain evolution and the polarization rotation under bipolar cyclic and static electric fields are carried out for [001]-oriented 68Pb(Mg1/3Nb2/3)O-3-32PbTiO(3) (PMN-32PT) single crystal which is located at the morphotropic phase boundary (MPB). The results demonstrate that after being poled in [001] direction, the original rhombohedral (R) phase is transformed into a monoclinic M-C phase with Pm space group. When the single crystal is subjected to bipolar cyclic electric field, distinct domain-boundary structures are revealed which are unlikely to be detected in static electric loadings. The existence of R phase is also detected during the polarization reversal. Under static electric field, polarization rotation from M-C to R occurs and, as the field increases, phase transition from M-C to tetragonal (T) phase takes place. In the vicinity of regions where M-C-T phase transition takes place, polarization reversal of M-C phase is observed, which is attributed to the local stress field from the strain compatibility between the transitioned area and the nontransitioned area. With the removal of the field, T and M-C phases retain while R phase reverses to M-C phase. The results demonstrate that the energy differences among M-C, R, and T phases are rather slim. Accordingly, the multiphase coexistence and polarization rotation under both cyclic and static electric loadings might be responsible for the ultrahigh piezoelectric response of the [001]-oriented rhombohedral Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals near the MPB. |
语种 | 英语 ; 英语 |
出版者 | AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/78946] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Fang, F.,Luo, Xu,Yang, W.. Polarization rotation and multiphase coexistence for Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals at the morphotropic phase boundary under electric loading[J],2010, 2010. |
APA | Fang, F.,Luo, Xu,&Yang, W..(2010).Polarization rotation and multiphase coexistence for Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals at the morphotropic phase boundary under electric loading.. |
MLA | Fang, F.,et al."Polarization rotation and multiphase coexistence for Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals at the morphotropic phase boundary under electric loading".(2010). |
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