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 journalArticle

28 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 languageEnglish (US)
Pages (from-to)124-126
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number1
DOIs
StatePublished - Jul 5 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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