| Structural Phase Transition and Photoluminescence Properties of YF3:Eu3+ Nanocrystals under High Pressure |
| Gong, C; Li, QJ; Liu, R; Hou, Y; Wang, JD; Dong, XT; Liu, B; Tan, X; Liu, J; Yang, K; Zou, B; Cui, T; Liu, BB;刘景
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| 2014
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| 发表期刊 | JOURNAL OF PHYSICAL CHEMISTRY C
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| 卷号 | 118期号:39页码:22739-22745 |
| 摘要 | High-pressure behaviors of YF3:Eu3+ nanocrystals with an average grain size of 40 nm were investigated by in situ high-pressure synchrotron radiation X-ray diffraction measurements up to 31.1 GPa at ambient temperature. The pressure-induced structural phase transition starts at 11.8 GPa and completes at 23.3 GPa. YF3:Eu3+ nanocrystals with a starting phase of orthorhombic structure transform into a high-pressure phase, which is inferred to be hexagonal structure. The high-pressure structure returned to the orthorhombic phase after release of pressure. The transition pressure is enhanced in nanosized YF3:Eu3+ as compared to submicrometer size samples, which is due to the surface energy differences between submicrometer size and nanosized materials. The nanosized samples of high-pressure phase were easier to compress with smaller bulk modulus than the submicrometer size samples. The photoluminescence properties of YF3:Eu3+ have also been studied in the pressure range from ambient pressure to 25.0 GPa at room temperature. Accompanied by the structure transformation, the Eu3+ ion luminescence from D-5(0) -> (7)F(1,2,3,44)transition in YF3:Eu3+ nanocrystals emerges obvious changes, which indicate the variation of the local symmetry of Eu3+ ions. |
| 学科领域 | Chemistry; Science & Technology - Other Topics; Materials Science
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| DOI | 10.1021/jp504474u
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| 收录类别 | SCI
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| WOS记录号 | WOS:000342652000038
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/225149
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| 专题 | 多学科研究中心
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推荐引用方式
GB/T 7714 |
Gong, C,Li, QJ,Liu, R,et al. Structural Phase Transition and Photoluminescence Properties of YF3:Eu3+ Nanocrystals under High Pressure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(39):22739-22745.
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| APA |
Gong, C.,Li, QJ.,Liu, R.,Hou, Y.,Wang, JD.,...&Liu, BB；刘景.(2014).Structural Phase Transition and Photoluminescence Properties of YF3:Eu3+ Nanocrystals under High Pressure.JOURNAL OF PHYSICAL CHEMISTRY C,118(39),22739-22745.
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| MLA |
Gong, C,et al."Structural Phase Transition and Photoluminescence Properties of YF3:Eu3+ Nanocrystals under High Pressure".JOURNAL OF PHYSICAL CHEMISTRY C 118.39(2014):22739-22745.
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