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Title: Distinct local structure of nanoparticles and nanowires of V{sub 2}O{sub 5} probed by x-ray absorption spectroscopy

We have used V K-edge x-ray absorption spectroscopy to study local structures of bulk, nanoparticles and nanowires of V{sub 2}O{sub 5}. The extended x-ray absorption fine structure measurements show different local displacements in the three morphologically different V{sub 2}O{sub 5} samples. It is found that the nanowires have a significantly ordered chain structure in comparison to the V{sub 2}O{sub 5} bulk. In contrast, nanoparticles have larger interlayer disorder. The x-ray absorption near-edge structure spectra show different electronic structure that appears to be related with the local atomic disorder in the three V{sub 2}O{sub 5} samples.
Authors:
; ; ;  [1] ;  [1] ;  [2] ; ; ;  [3] ;  [4] ;  [5]
  1. Dipartimento di Fisica, Universitá di Roma “La Sapienza” - P. le Aldo Moro 2, 00185 Roma (Italy)
  2. (Italy)
  3. National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba 305-8568 (Japan)
  4. Department of Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561 (Japan)
  5. (Japan)
Publication Date:
OSTI Identifier:
22253675
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; ELECTRONIC STRUCTURE; QUANTUM WIRES; VANADATES; VANADIUM OXIDES; X RADIATION; X-RAY SPECTROSCOPY