Phase Transition Behaviors of Lead-Free (Na1/2Bi1/2)TiO3-BaTiO3 Single Crystals Studied by Inelastic Light Scattering Spectroscopy
文献类型：期刊论文
| 作者 | Lee, Byoung Wan1; Ko, Jae-Hyeon1; Li, Xiaobing2; Luo, Haosu2 |
| 刊名 | FERROELECTRICS
 |
| 出版日期 | 2016-01-02 |
| 卷号 | 490期号:1页码:43-50 |
| 关键词 | Lead-free NBT-BT Brillouin scattering phase transition |
| 英文摘要 | Acoustic anomalies of (1-x)(Na1/2Bi1/2)TiO3-xBaTiO(3) (NBT-xBT) with x = 0.05 were investigated over a wide temperature range of from 900 degrees C to -200 degrees C by using Brillouin light scattering. The sound velocity of the longitudinal acoustic mode propagating along the [100] direction showed a substantial softening, while the acoustic attenuation coefficient of this mode exhibited a large increase in the paraelectric phase. These anomalies were attributed to the formation and growth of noncentrosymmetric polar regions in the paraelectric phase, which was supported by the appearance of the strong polarized central peak. The absence of any sharp or discontinuous changes in the acoustic properties seems to suggest that the polar regions remain short-ranged and do not form macroscopic polar domains at low temperatures, which may be attributed to the inherent A-site disorder induced by random substitutions of Bi, Na and Ba cations. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Materials Science, Multidisciplinary ; Physics, Condensed Matter |
| 研究领域[WOS] | Materials Science ; Physics |
| 关键词[WOS] | BRILLOUIN-SCATTERING ; RAMAN-SPECTROSCOPY ; ELASTIC ANOMALIES ; CERAMICS ; BOUNDARY ; SYSTEM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369189600005 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/23247]  |
| 专题 | 上海硅酸盐研究所_人工晶体研究中心_期刊论文 |
| 作者单位 | 1.Hallym Univ, Dept Phys, 1 Hallymdaehakgil, Chunchon 200702, Gangwondo, South Korea 2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lee, Byoung Wan,Ko, Jae-Hyeon,Li, Xiaobing,et al. Phase Transition Behaviors of Lead-Free (Na1/2Bi1/2)TiO3-BaTiO3 Single Crystals Studied by Inelastic Light Scattering Spectroscopy[J]. FERROELECTRICS,2016,490(1):43-50. |
| APA | Lee, Byoung Wan,Ko, Jae-Hyeon,Li, Xiaobing,&Luo, Haosu.(2016).Phase Transition Behaviors of Lead-Free (Na1/2Bi1/2)TiO3-BaTiO3 Single Crystals Studied by Inelastic Light Scattering Spectroscopy.FERROELECTRICS,490(1),43-50. |
| MLA | Lee, Byoung Wan,et al."Phase Transition Behaviors of Lead-Free (Na1/2Bi1/2)TiO3-BaTiO3 Single Crystals Studied by Inelastic Light Scattering Spectroscopy".FERROELECTRICS 490.1(2016):43-50. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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