SHERP

Orientation-dependent x-ray absorption fine structure of ZnO nanorods

Cited 0 time in webofscience Cited 0 time in scopus
Authors
Han, S.-W.; Yoo, H.-J.; An, Sung Jin; Yoo, Jinkyoung; Yi, Gyu-Chul
Issue Date
2005-01-10
Publisher
American Institute of Physics
Citation
Appl. Phys. Lett. 86, 021917 (2005)
Abstract
The local structure of two samples of vertically well-aligned ZnO nanorods with average diameters of 13 and 37 nm were studied using orientation-dependent x-ray absorption fine structure (XAFS) at the Zn K edge. The aligned ZnO nanorod samples were fabricated on sapphire (0001) substrates with a catalyst-free metalorganic vapor-phase epitaxy method. The XAFS measurements showed that both nanorod samples have a well-ordered wurtzite structure and that no vacancy was observed at either site of zinc or oxygen atoms. However, we found that in both samples the lattice constants of a and b were shrunken by similar to0.04 Angstrom while c was elongated by similar to0.1 Angstrom, compared with those of their bulk counterparts. Furthermore, there was a substantial amount of disorder in the bond length of the only Zn-O pairs located near the ab plane. This may suggest that the terminating atoms at the boundaries of the nanorods are oxygen atoms. (C) 2005 American Institute of Physics.
ISSN
0003-6951 (print)1077-3118 (online)
Language
English
URI
http://hdl.handle.net/10371/4893
http://link.aip.org/link/?APPLAB/86/021917/1
DOI
https://doi.org/10.1063/1.1851616
https://doi.org/10.1063/1.1851616
Files in This Item:
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Physics and Astronomy (물리·천문학부)Physics (물리학전공)Journal Papers (저널논문_물리학전공)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse