CHARACTERIZATION OF CONCENTRATED MAGNETIC COLLOIDS BY MEASUREMENTS OFFREQUENCY-DEPENDENCE OF AC MAGNETIC-SUSCEPTIBILITY

Authors
PEIKOV VT LANE AM
Citation
Vt. Peikov et Am. Lane, CHARACTERIZATION OF CONCENTRATED MAGNETIC COLLOIDS BY MEASUREMENTS OFFREQUENCY-DEPENDENCE OF AC MAGNETIC-SUSCEPTIBILITY, Journal of colloid and interface science (Print), 206(1), 1998, pp. 350-353
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
Journal of colloid and interface science (Print) → ACNP
ISSN journal
00219797
Volume
206
Issue
1
Year of publication
1998
Pages
350 - 353
Database
ISI
SICI code
0021-9797(1998)206:1<350:COCMCB>2.0.ZU;2-F
Abstract
The AC magnetic susceptibility frequency dependence in the range 10 Hz -10 kHz is used to study concentrated magnetic colloids. Different the oretical and empirical models are used to describe the frequency depen dence. The magnetic analogue of the Cole-Cole model is found to be mos t suitable. Values of the model fitting parameters and the relaxation time distribution provide information about the dispersability, viscoe lastic properties, and interparticle interactions in the magnetic coll oids. (C) 1998 Academic Press.