Research Center for Engineering of
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Title: Concentration and temperature effect in microstructure of ferrofluids
Published In: Romanian Reports in Physics, Vol. 58, No. 3, pp. 313-318
Description: The spatial correlations in magnetite-based ferrofluids (FF) with pentanol carrier have been investigated by small-angle neutron scattering as dependent on the concentration of the magnetic phase (C = 0.6-20% vol.) and temperature (20-85oC). Some peculiarities in the structure of the FF were detected, such as an anomalous increase of short range order by heating of low concentrated FF (C~0.6-4.0% vol.), the formation of short range order at ambient temperature which weakens at growing concentrations C=7-14% vol., the existence of the stable structure at the highest concentration C~20% vol. when particles shells interpenetrate. Neutron scattering data are discussed regarding to particles intrinsic magnetisation enhancement induced by ordering.
ISSN:ISSN 1221-1451
Publication year: 2006
Keywords:Neutron scattering, ferrofluid, structure
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Authors: TOROK Gyula , LEBEDEV Vasil T. , BICA Doina , VEKAS Ladislau , AVDEEV Mikhail ,
Type: National Journal Article
Laboratory: Rheology Laboratory
Institution: ARFT