Structural Modification of Nanocrystalline Ceria using Ion Beams

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Nano Letters

OSTI ID:1018606

Zhang, Yanwen ^[1]; Edmondson, Philip D ^[1]; Varga, Tamas ^[2]; Moll, Sandra ^[2]; Namavar, Fereydoon ^[3]; Weber, William J ^[1]

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1. ORNL
2. Pacific Northwest National Laboratory (PNNL)
3. University of Nebraska Medical Center

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 unique self-healing response of radiation damage at grain boundaries is applied to control the grain size at nanoscale as a function of ion dose and irradiation temperature. Structural modification by energetic ions is proposed to achieve disirable electronic-ionic conductivity.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1018606
• Journal Information: Nano Letters, Vol. 13, Issue 25
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
GRAIN BOUNDARIES
GRAIN SIZE
ION BEAMS
IRRADIATION
MODIFICATIONS
RADIATIONS
TAIL IONS
nanocrystalline
ceria
self-healing
irradiation
interface volume
grain boundary
structural modification