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Issue 25, 2011
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Structural modification of nanocrystalline ceria by ion beams

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Abstract

Exceptional size-dependent electronic–ionic conductivity of nanostructured ceria can significantly alter materials properties in chemical, physical, electronic and optical applications. Using energetic ions, we have demonstrated effective modification of interface volume and grain size in nanocrystalline ceria from a few nm up to ∼25 nm, which is the critical region for controlling size-dependent material property. The grain size increases and follows an exponential law as a function of ion fluence that increases with temperature, while the cubic phase is stable under the irradiation. The unique self-healing response of radiation damage at grain boundaries is utilized to control the grain size at the nanoscale. Structural modification by energetic ions is proposed to achieve desirable electronic–ionic conductivity.

Graphical abstract: Structural modification of nanocrystalline ceria by ion beams

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Publication details

The article was received on 05 Mar 2011, accepted on 03 May 2011 and first published on 25 May 2011


Article type: Paper
DOI: 10.1039/C1CP21335K
Citation: Phys. Chem. Chem. Phys., 2011,13, 11946-11950
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    Structural modification of nanocrystalline ceria by ion beams

    Y. Zhang, P. D. Edmondson, T. Varga, S. Moll, F. Namavar, C. Lan and W. J. Weber, Phys. Chem. Chem. Phys., 2011, 13, 11946
    DOI: 10.1039/C1CP21335K

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