Pressure-induced band-gap energy increase in a metal iodate
文献类型：期刊论文
| 作者 | Liang, A; Shi, LT; Turnbull, R; Manjon, FJ; Ibanez, J; Popescu, C; Jasmin, M; Singh, J; Venkatakrishnan, K; Vaitheeswaran, G |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2022 |
| 卷号 | 106期号:23页码:235203 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.106.235203 |
| 文献子类 | Article |
| 英文摘要 | A wide band gap is one of the essential requirements for metal iodates to be used as nonlinear optical materials. Usually, the band gap of these materials decreases under the application of pressure. Herein, we introduce a case in which the band-gap energy of a hydrated metal iodate, namely Ca(IO3)2 center dot H2O, has been successfully increased, from 4.52 to 4.92 eV, by applying external pressure without showing signs of saturation upon increasing pres-sure. The pressure-induced nonlinear band-gap opening correlates with the pressure-induced shortening of the I-O bond distances, as obtained from x-ray diffraction measurements. In addition, two pressure-induced isostructural phase transitions are observed in the pressure regions of 6.6-8.0 and 13.0-15.5 GPa. These two isostructural phase transitions cause a nonlinear pressure-induced evolution of the band-gap energy and crystal lattice parameters, as well as the occurrence of several extra peaks and peak splitting in Raman spectra. |
| 电子版国际标准刊号 | 2469-9969 |
| 语种 | 英语 |
| WOS记录号 | WOS:000897040300001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300124]  |
| 专题 | 高能物理研究所_东莞分部 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liang, A,Shi, LT,Turnbull, R,et al. Pressure-induced band-gap energy increase in a metal iodate[J]. PHYSICAL REVIEW B,2022,106(23):235203. |
| APA | Liang, A.,Shi, LT.,Turnbull, R.,Manjon, FJ.,Ibanez, J.,...&Errandonea, D.(2022).Pressure-induced band-gap energy increase in a metal iodate.PHYSICAL REVIEW B,106(23),235203. |
| MLA | Liang, A,et al."Pressure-induced band-gap energy increase in a metal iodate".PHYSICAL REVIEW B 106.23(2022):235203. |
入库方式： OAI收割
来源：高能物理研究所
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