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Flege JI, Höcker J, Kaemena B, et al. Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001). Nanoscale. 2016;8(20):10849-56doi: 10.1039/c6nr02393b.
Flege, J. I., Höcker, J., Kaemena, B., Menteş, T. O., Sala, A., Locatelli, A., Gangopadhyay, S., Sadowski, J. T., Senanayake, S. D., & Falta, J. (2016). Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001). Nanoscale, 8(20), 10849-56. https://doi.org/10.1039/c6nr02393b
Flege, Jan Ingo, et al. "Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001)." Nanoscale vol. 8,20 (2016): 10849-56. doi: https://doi.org/10.1039/c6nr02393b
Flege JI, Höcker J, Kaemena B, Menteş TO, Sala A, Locatelli A, Gangopadhyay S, Sadowski JT, Senanayake SD, Falta J. Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001). Nanoscale. 2016 May 19;8(20):10849-56. doi: 10.1039/c6nr02393b. PMID: 27165117.
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Nanoscale. 2016 May 19;8(20):10849-56. doi: 10.1039/c6nr02393b.

Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001).

Nanoscale

Jan Ingo Flege, Jan Höcker, Björn Kaemena, T Onur Menteş, Alessandro Sala, Andrea Locatelli, Subhashis Gangopadhyay, Jerzy T Sadowski, Sanjaya D Senanayake, Jens Falta

Affiliations

  1. Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany. [email protected] and MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany.
  2. Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany. [email protected].
  3. Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 - km 163, 5 in AREA Science Park, 34149 Trieste, Italy.
  4. Department of Physics, BITS Pilani, Pilani 333 031, Rajasthan, India.
  5. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
  6. Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA.

PMID: 27165117 DOI: 10.1039/c6nr02393b

Abstract

We have studied (001) surface terminated cerium oxide nanoparticles grown on a ruthenium substrate using physical vapor deposition. Their morphology, shape, crystal structure, and chemical state are determined by low-energy electron microscopy and micro-diffraction, scanning probe microscopy, and synchrotron-based X-ray absorption spectroscopy. Square islands are identified as CeO2 nanocrystals exhibiting a (001) oriented top facet of varying size; they have a height of about 7 to 10 nm and a side length between about 50 and 500 nm, and are terminated with a p(2 × 2) surface reconstruction. Micro-illumination electron diffraction reveals the existence of a coincidence lattice at the interface to the ruthenium substrate. The orientation of the side facets of the rod-like particles is identified as (111); the square particles are most likely of cuboidal shape, exhibiting (100) oriented side facets. The square and needle-like islands are predominantly found at step bunches and may be grown exclusively at temperatures exceeding 1000 °C.

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