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Title: Effect of cobalt doping on the mechanical properties of ZnO nanowires

Abstract

In this work, we investigate the influence of doping on the mechanical properties of ZnO nanowires (NWs) by comparing the mechanical properties of pure and Co-doped ZnO NWs grown in similar conditions and having the same crystallographic orientation [0001]. The mechanical characterization included three-point bending tests made with atomic force microscopy and cantilever beam bending tests performed inside scanning electron microscopy. It was found that the Young's modulus of ZnO NWs containing 5% of Co was approximately a third lower than that of the pure ZnO NWs. Bending strength values were comparable for both materials and in both cases were close to theoretical strength indicating high quality of NWs. Dependence of mechanical properties on NW diameter was found for both doped and undoped ZnO NWs. - Highlights: •Effect of Co doping on the mechanical properties of ZnO nanowires is studied. •Co substitutes Zn atoms in ZnO crystal lattice. •Co addition affects crystal lattice parameters. •Co addition results in significantly decreased Young's modulus of ZnO. •Bending strength for doped and undoped wires is close to the theoretical strength.

Authors:
;  [1]
  1. Institute of Physics
Publication Date:
OSTI Identifier:
22689646
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 121; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ATOMIC FORCE MICROSCOPY; ATOMS; BENDING; COBALT; COMPARATIVE EVALUATIONS; CRYSTAL LATTICES; CRYSTALLOGRAPHY; CRYSTALS; DOPED MATERIALS; FLEXURAL STRENGTH; LATTICE PARAMETERS; NANOWIRES; SCANNING ELECTRON MICROSCOPY; ZINC; ZINC OXIDES

Citation Formats

Vahtrus, Mikk, and Šutka, Andris. Effect of cobalt doping on the mechanical properties of ZnO nanowires. United States: N. p., 2016. Web. doi:10.1016/J.MATCHAR.2016.09.027.
Vahtrus, Mikk, & Šutka, Andris. Effect of cobalt doping on the mechanical properties of ZnO nanowires. United States. doi:10.1016/J.MATCHAR.2016.09.027.
Vahtrus, Mikk, and Šutka, Andris. Tue . "Effect of cobalt doping on the mechanical properties of ZnO nanowires". United States. doi:10.1016/J.MATCHAR.2016.09.027.
@article{osti_22689646,
title = {Effect of cobalt doping on the mechanical properties of ZnO nanowires},
author = {Vahtrus, Mikk and Šutka, Andris},
abstractNote = {In this work, we investigate the influence of doping on the mechanical properties of ZnO nanowires (NWs) by comparing the mechanical properties of pure and Co-doped ZnO NWs grown in similar conditions and having the same crystallographic orientation [0001]. The mechanical characterization included three-point bending tests made with atomic force microscopy and cantilever beam bending tests performed inside scanning electron microscopy. It was found that the Young's modulus of ZnO NWs containing 5% of Co was approximately a third lower than that of the pure ZnO NWs. Bending strength values were comparable for both materials and in both cases were close to theoretical strength indicating high quality of NWs. Dependence of mechanical properties on NW diameter was found for both doped and undoped ZnO NWs. - Highlights: •Effect of Co doping on the mechanical properties of ZnO nanowires is studied. •Co substitutes Zn atoms in ZnO crystal lattice. •Co addition affects crystal lattice parameters. •Co addition results in significantly decreased Young's modulus of ZnO. •Bending strength for doped and undoped wires is close to the theoretical strength.},
doi = {10.1016/J.MATCHAR.2016.09.027},
journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 121,
place = {United States},
year = {2016},
month = {11}
}