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NMR studies into colloidal stability and magnetic order in fatty acid stabilised aqueous magnetic fluids.
MedLine Citation:
PMID:  20922236     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
We report the physico-chemical characterisation of fatty acid stabilised aqueous magnetic fluids, which are ideal systems for studying the influence of nanoparticle aggregation on the emergent magnetic resonance properties of the suspensions. Stable colloids of superparamagnetic magnetite, Fe(3)O(4), nanoparticle clusters in the 80 to 100 nm size range were produced by in situ nanoparticle growth and stabilisation, and by suspending pre-formed nanoparticles. NMR relaxation analysis shows that the magnetic resonance properties of the two types of suspension differ substantially and provides new insights into how the relaxation mechanisms are determined by the organisation of the nanoparticles within the clusters.
Authors:
Swapankumar Ghosh; Darren Carty; Sarah P Clarke; Serena A Corr; Renata Tekoriute; Yurii K Gun'ko; Dermot F Brougham
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-10-05
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  12     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  England    
Other Details:
Languages:  eng     Pagination:  14009-16     Citation Subset:  IM    
Affiliation:
National Institute for Cellular Biotechnology, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland.
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