Mechanical behavior and magnetic separation of quasi-one-dimensional SnO₂ nanostructures: A technique for achieving monosize nanobelts/nanowires

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Title: Mechanical behavior and magnetic separation of quasi-one-dimensional SnO₂ nanostructures: A technique for achieving monosize nanobelts/nanowires
Author: Jin, Z. Q. ; Ding, Yong ; Wang, Z. L. (Zhong Lin)
Abstract: The as-synthesized nanowires and nanobelts usually have a large size distribution. We demonstrate here a ball milling technique for narrowing the size distribution of oxide nanobelts and nanowires. High-resolution scanning and transmission electron microscopy reveals that the one-dimensional SnO₂ nanostructures with size >150 nm are sensitive to the milling effect and most of them were fractured into nanoparticles even after a short-time milling. These nanoparticles contain magnetic Fe components, which could be effectively separated from those nanobelts by employing a magnetic field. This feature promises a potentials application in the nanostructured materials separation. It was also found that the dominant size of the survived nanostructures is <100 nm. The good mechanical behavior of the nanostructures are not only related to the superior mechanical toughness due to small size, but also related to the low defect density.
Description: ©2005 American Institute of Physics. The electronic version of this article is the complete one and can be found online at: http://link.aip.org/link/?JAPIAU/97/074309/1 DOI:10.1063/1.1882774
Type: Article
URI: http://hdl.handle.net/1853/27295
ISSN: 0021-8979
Citation: Journal of Applied Physics, 97 (2005) 074309
Date: 2005-03-25
Contributor: Georgia Institute of Technology. School of Materials Science and Engineering
University of Texas at Arlington. Dept. of Physics
Chinese Academy of Sciences. Institute of Physics
Publisher: Georgia Institute of Technology
American Institute of Physics
Subject: Tin compounds
Nanowires
Nanostructured materials
Ball milling
Mechanical alloying
Nanotechnology
Magnetic separation
Fracture
Fracture toughness
Bending
Dislocation density
Particle size
Nanoparticles
Transmission electron microscopy

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