Atomic-scale structure of nancrystalline CeO{sub 2}-ZrO{sub 2} oxides by total x-ray diffraction and pair distribution function analysis.

Journal Article · Mon Jan 01 00:00:00 EST 2007 · J. Phys. :Cond. Matter

DOI:https://doi.org/10.1088/0953-8984/19/15/156205· OSTI ID:920000

Gateshki, M; Niederberger, M; Deshpande, A S; Ren, Y; Petkov, V

Total x-ray diffraction and atomic pair distribution function analysis have been used to determine the atomic ordering in nanocrystalline ({approx}1.5 nm in size) CeO{sub 2}-ZrO{sub 2} prepared by a sol-gel route. Experimental data show that the oxides are a structurally and chemically inhomogeneous mixture of nanoscale domains with cubic-type and monoclinic-type atomic ordering, predominantly occupied by Ce and Zr atomic species, respectively. The study is another demonstration of the great potential of non-traditional crystallography in studying the structure of nanocrystalline materials.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); CMU Grant
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 920000
• Report Number(s): ANL/XSD/JA-60504; TRN: US200822%%501
• Journal Information: J. Phys. :Cond. Matter, Vol. 19, Issue 2007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTALLOGRAPHY
DISTRIBUTION FUNCTIONS
MIXTURES
CERIUM OXIDES
ZIRCONIUM OXIDES
X-RAY DIFFRACTION
NANOSTRUCTURES
ORDER PARAMETERS