IONIC-STRENGTH EFFECT ON MAGNETIC FLUIDS - A RESONANCE STUDY

Authors
MORAIS PC TOURINHO FA GONCALVES GRR TRONCONI AL
Citation
Pc. Morais et al., IONIC-STRENGTH EFFECT ON MAGNETIC FLUIDS - A RESONANCE STUDY, Journal of magnetism and magnetic materials, 149(1-2), 1995, pp. 19-21
Citations number
8
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
149
Issue
1-2
Year of publication
1995
Pages
19 - 21
Database
ISI
SICI code
0304-8853(1995)149:1-2<19:IEOMF->2.0.ZU;2-I
Abstract
Magnetic resonance data showing the ionic strength effect in ionic wat er-based magnetic fluids is reported for the first time. Changes in th e effective radii of the suspended particles is considered as the main source for magnetic resonance changes. The effective radius is analyz ed as a function of the ionic strength taking into account the electro static screening effect. A simple particle charge-discharge mechanism due to changes in ionic strength of the solution is proposed.