Title :
Study of particle-particle interaction in magnetic fluids using magnetic resonance
Author :
Morais, P.C. ; Goncalves, G.R.R. ; Neto, K.S. ; Buske, N.
Author_Institution :
Instituto de Fisica, Nucleo de Fisica Aplicada, Brasilia Univ., Brazil
Abstract :
Summary form only given. A hydrocarbon-based magnetic fluid (MF) containing core magnetite nanoparticles, surface-coated by a double-layer of dodecanoic acid, is investigated in the range of 10/sup 17/ to 10/sup 13/ particle/cm/sup 3/, using an X-band CW spectrometer. The data are discussed in terms of the reduction of the particle-particle interaction upon dilution of a stock MF sample. The feature observed around 2.2 kgauss is likely due to a nanoparticle chain-like structure, but was washed away upon dilution.
Keywords :
magnetic fluids; paramagnetic resonance; Fe/sub 3/O/sub 4/; X-band CW spectrometer; dilution effects; dodecanoic acid double-layer surface coating; hydrocarbon-based magnetic fluid; magnetic resonance; magnetite core nanoparticles; nanoparticle chain-like structure; particle-particle interaction; Birefringence; Heart; Magnetic cores; Magnetic fields; Magnetic liquids; Magnetic properties; Magnetic resonance; Nanoparticles; Nanostructures; Spectroscopy;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000985
