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Local-structure evidence for a phase transition in a lead-free single crystal of (Na1/2Bi1/2)TiO3-0.06BaTiO(3) by absorption fine-structure spectroscopy with synchrotron x-ray radiation
Li, XB; Nie, SD; Wang, FF; Zhao, XY; Zhang, HW; Luo, HS; Li, GR; Ko, AEYO; Guo, Z; Jiang, Z; Tai, RZ
2020-03-26
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Issue10
SubtypeArticle
Abstract(Na1/2Bi1/2)TiO3-xBaTiO(3) (NBT-xBT) single crystal, as one of the most promising candidates to replace lead-based ferroelectrics, is a typical and unique lead-free system with morphotropic phase boundary (MPB) by far. In this paper, the phase transition process of NBT-0.06BT crystal in a wide temperature range of 20 similar to 550 degrees C was analyzed at atomic scale by theoretical fitting to the measured synchrotron radiation x-ray absorption fine structure spectra quantitatively. Detailed analysis revealed a gradually transition of local structure at the point of phase transition from rhombohedral to tetragonal phase in NBT-0.06BT crystal on the bond lengths of Bi-O and Bi-Ti. The continuous evolution of local structure with no obvious barrier to overcome is one of the intrinsic characteristics ofMPB at atomic scale and is responsible for the high piezoelectric properties. These results could promote the understanding of the origin of the high piezoelectric performance around the MPB and meanwhile guide new lead-free material designs.
DOI10.1103/PhysRevB.101.104105
WOS KeywordELECTRICAL-PROPERTIES ; GROWTH
Language英语
WOS Research AreaMaterials Science ; Physics
PublisherAMER PHYSICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28205
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, XB,Nie, SD,Wang, FF,et al. Local-structure evidence for a phase transition in a lead-free single crystal of (Na1/2Bi1/2)TiO3-0.06BaTiO(3) by absorption fine-structure spectroscopy with synchrotron x-ray radiation[J]. PHYSICAL REVIEW B,2020(10).
APA Li, XB.,Nie, SD.,Wang, FF.,Zhao, XY.,Zhang, HW.,...&Tai, RZ.(2020).Local-structure evidence for a phase transition in a lead-free single crystal of (Na1/2Bi1/2)TiO3-0.06BaTiO(3) by absorption fine-structure spectroscopy with synchrotron x-ray radiation.PHYSICAL REVIEW B(10).
MLA Li, XB,et al."Local-structure evidence for a phase transition in a lead-free single crystal of (Na1/2Bi1/2)TiO3-0.06BaTiO(3) by absorption fine-structure spectroscopy with synchrotron x-ray radiation".PHYSICAL REVIEW B .10(2020).
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