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Direct Zircon-to-Scheelite Structural Transformation in YPO4 and YPO4:Eu3+ Nanoparticles Under High Pressure
Yuan, HS; Wang, K; Li, SR; Tan, X; Li, Q; Yan, TT; Cheng, BY; Yang, K; Liu, BB; Zou, GT; Zou, B
2012
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume116Issue:46
AbstractThe high-pressure behavior of zircon structured YPO4 (with/without Eu3+ doping) nanoparticles was examined at room temperature using in situ synchrotron X-ray diffraction (XRD) and photoluminescence (PL) measurements. In contrast with the reported XRD results of bulk YPO, upon compression, the nanoparticles showed a distinct transition sequence: zircon phase -> scheelite phase (similar to 18 GPa) without the metastable monazite phase. By the return to ambient pressure, both XRD and PL results revealed that the scheelite phase could be reserved. Further Raman experiments helped us to identify the valuable mode nu(1)(A(g)) of the scheelite structure in the quenched samples. The dopants effect, quasi hydrostatic stress, and nanoscale-induced surface energy difference are considered to explain the high-pressure behavior of the nanoparticles. It is proposed that the nanoscale-induced higher surface energy contribution plays a crucial role in the distinctive high-pressure behavior of the nanoparticles.
Language英语
Funding Project应物所项目组
WOS IDWOS:000311461100052
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13132
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Yuan, HS,Wang, K,Li, SR,et al. Direct Zircon-to-Scheelite Structural Transformation in YPO4 and YPO4:Eu3+ Nanoparticles Under High Pressure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2012,116(46).
APA Yuan, HS.,Wang, K.,Li, SR.,Tan, X.,Li, Q.,...&Zou, B.(2012).Direct Zircon-to-Scheelite Structural Transformation in YPO4 and YPO4:Eu3+ Nanoparticles Under High Pressure.JOURNAL OF PHYSICAL CHEMISTRY C,116(46).
MLA Yuan, HS,et al."Direct Zircon-to-Scheelite Structural Transformation in YPO4 and YPO4:Eu3+ Nanoparticles Under High Pressure".JOURNAL OF PHYSICAL CHEMISTRY C 116.46(2012).
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