Pressure induced increase of particle size and resulting weakening of elastic stiffness of CeO 2 nanocrystals

Zhongwu Wang; Yusheng Zhao; David Schiferl; C. S. Zha; Robert T. Downs

doi:10.1063/1.1768298

Pressure induced increase of particle size and resulting weakening of elastic stiffness of CeO ₂ nanocrystals

Zhongwu Wang
, Yusheng Zhao
, David Schiferl
, C. S. Zha
, Robert T. Downs

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

The increase in particle size due to pressure effects in CeO ₂ nanocrystals was analyzed. The synchroton x-ray diffraction technique was used to explore the size-induced compressional effects in nanocrystalline CeO ₂ to the pressure of 38 GPa. At ambient pressure CeO ₂ exhibited larger cell parameters than the micro-sized samples. The results show that at critical pressure of ~20 GPa, there was weakening of the size-induced effect in CeO ₂ that resulted into the weakening of elastic stiffness.

Original language	English (US)
Pages (from-to)	124-126
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	1
DOIs	https://doi.org/10.1063/1.1768298
State	Published - Jul 5 2004
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1768298

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title = "Pressure induced increase of particle size and resulting weakening of elastic stiffness of CeO 2 nanocrystals",

abstract = "The increase in particle size due to pressure effects in CeO 2 nanocrystals was analyzed. The synchroton x-ray diffraction technique was used to explore the size-induced compressional effects in nanocrystalline CeO 2 to the pressure of 38 GPa. At ambient pressure CeO 2 exhibited larger cell parameters than the micro-sized samples. The results show that at critical pressure of \textasciitilde{}20 GPa, there was weakening of the size-induced effect in CeO 2 that resulted into the weakening of elastic stiffness.",

author = "Zhongwu Wang and Yusheng Zhao and David Schiferl and Zha, \{C. S.\} and Downs, \{Robert T.\}",

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T1 - Pressure induced increase of particle size and resulting weakening of elastic stiffness of CeO 2 nanocrystals

AU - Wang, Zhongwu

AU - Zhao, Yusheng

AU - Schiferl, David

AU - Zha, C. S.

AU - Downs, Robert T.

PY - 2004/7/5

Y1 - 2004/7/5

N2 - The increase in particle size due to pressure effects in CeO 2 nanocrystals was analyzed. The synchroton x-ray diffraction technique was used to explore the size-induced compressional effects in nanocrystalline CeO 2 to the pressure of 38 GPa. At ambient pressure CeO 2 exhibited larger cell parameters than the micro-sized samples. The results show that at critical pressure of ~20 GPa, there was weakening of the size-induced effect in CeO 2 that resulted into the weakening of elastic stiffness.

AB - The increase in particle size due to pressure effects in CeO 2 nanocrystals was analyzed. The synchroton x-ray diffraction technique was used to explore the size-induced compressional effects in nanocrystalline CeO 2 to the pressure of 38 GPa. At ambient pressure CeO 2 exhibited larger cell parameters than the micro-sized samples. The results show that at critical pressure of ~20 GPa, there was weakening of the size-induced effect in CeO 2 that resulted into the weakening of elastic stiffness.

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UR - https://www.scopus.com/pages/publications/3242681761#tab=citedBy

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JF - Applied Physics Letters

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Pressure induced increase of particle size and resulting weakening of elastic stiffness of CeO ₂ nanocrystals

Abstract

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