Structure evolution mechanism of Na0.5Bi2.5Nb2-xWxO9+delta ferroelectric ceramics: Temperature-dependent optical evidence and first-principles calculations
文献类型：期刊论文
| 作者 | Li, Qianqian1; Wang, Junyong1; Li, Mengjiao1; Guo, Shuang1; Zhang, Jinzhong1; Hu, Zhigao1; Zhou, Zhiyong2; Wang, Genshui2; Dong, Xianlin2; Chu, Junhao1 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2017 |
| 卷号 | 96期号:2 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.96.024101 |
| 英文摘要 | The effects of W doping on the structure and optical properties of Aurivillius ferroelectric Na0.5Bi2.5Nb2O9-based ceramics have been investigated by x-ray diffraction, far-infrared reflectance, and spectroscopic ellipsometry (SE). Moreover, the temperature dependent lattice dynamics and electronic properties have been systemically explored by Raman scattering (77-800 K) and SE (200-800 K), respectively. The anomalous temperature dependence of phonon frequencies around 600 K can be ascribed to the existence of an intermediate phase between ferroelectric orthorhombic and paraelectric tetragonal phases, which is also confirmed by temperature dependent electronic transitions extracted by the SE technique. In addition, the intrinsic evolution mechanism of the structure and electronic transitions during the phase transitions has been clarified by first-principles calculations, which indicate the effective application of noncontact optical methods in judging the phase transformations of ferroelectric materials. |
| WOS记录号 | WOS:000405021400004 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26664]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.East China Normal Univ, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China 2.East China Normal Univ, Dept Elect Engn, Tech Ctr Multifunct Magnetoopt Spect Shanghai, Shanghai 200241, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qianqian,Wang, Junyong,Li, Mengjiao,et al. Structure evolution mechanism of Na0.5Bi2.5Nb2-xWxO9+delta ferroelectric ceramics: Temperature-dependent optical evidence and first-principles calculations[J]. PHYSICAL REVIEW B,2017,96(2). |
| APA | Li, Qianqian.,Wang, Junyong.,Li, Mengjiao.,Guo, Shuang.,Zhang, Jinzhong.,...&Chu, Junhao.(2017).Structure evolution mechanism of Na0.5Bi2.5Nb2-xWxO9+delta ferroelectric ceramics: Temperature-dependent optical evidence and first-principles calculations.PHYSICAL REVIEW B,96(2). |
| MLA | Li, Qianqian,et al."Structure evolution mechanism of Na0.5Bi2.5Nb2-xWxO9+delta ferroelectric ceramics: Temperature-dependent optical evidence and first-principles calculations".PHYSICAL REVIEW B 96.2(2017). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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