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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
2014
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
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
DOI10.1021/jp504474u
收录类别SCI
WOS记录号WOS:000342652000038
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225149
专题多学科研究中心
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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.
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.
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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