Document Detail


Self-assembly of magnetic Ni nanoparticles into 1D arrays with antiferromagnetic order.
MedLine Citation:
PMID:  19417526     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this paper, we report on the magnetic properties of isolated nanoparticles and interacting nanochains formed by the self-assembly of Ni nanoparticles. The magnetic properties were studied using superconducting quantum interference device (SQUID) magnetometry and magnetic force microscopy (MFM). We demonstrate that single-domain Ni nanoparticles spontaneously form one-dimensional (1D) chains under the influence of an external magnetic field. Furthermore, such magnetic field-driven self-assembly in conjunction with surface templating produces regular arrays of 1D nanochains with antiferromagnetic intra-chain order. The antiferromagnetic order, which is in striking contrast to what is found for non-interacting nanoparticle assemblies within the chains, can be evidenced from MFM and SQUID measurements.
Authors:
V Bliznyuk; S Singamaneni; S Sahoo; S Polisetty; Xi He; Ch Binek
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2009-02-17
Journal Detail:
Title:  Nanotechnology     Volume:  20     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-05-06     Completed Date:  2009-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  England    
Other Details:
Languages:  eng     Pagination:  105606     Citation Subset:  IM    
Affiliation:
College of Engineering and Applied Sciences, Western Michigan University, Kalamazoo, MI 49008, USA. valery.bliznyuk@wmich.edu
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MeSH Terms
Descriptor/Qualifier:
Crystallization / methods*
Macromolecular Substances / chemistry
Magnetics / methods*
Materials Testing
Molecular Conformation
Nanostructures / chemistry*,  ultrastructure*
Nanotechnology / methods*
Nickel / chemistry*
Particle Size
Surface Properties
Chemical
Reg. No./Substance:
0/Macromolecular Substances; 7440-02-0/Nickel

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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