Rheological properties of polydisperse magnetic fluids. Effect of chain aggregates / Zubarev AY // JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - 2001. - V. 93, l. 1. - P. 80-88.

ISSN/EISSN:

1063-7761 / 1090-6509

Type:

Article

Abstract:

A theoretical model of medium-density polydisperse magnetic fluids is proposed. The model takes into account that the major fraction of particles in typical ferrofluids is characterized by a magnetic core diameter of about 10 nm. In addition, there is a certain proportion of large particles with a core diameter of about 16 nm. As a result of the magnetic dipole interaction, the large particles form chain aggregates. Small particles, for which the magnetic dipole interaction energy (both with each other and with large particles) is smaller than the thermal energy, remain in the individual nonaggregated state. The distribution of chains with respect to the number of (large) particles and some rheological characteristics of the ferrofluids are determined. The proposed model is capable of explaining, in principle, the giant magnetoviscosity effect and a strong dependence of the rheological properties of ferrofluids on the shear rate observed in some recent experiments. (C) 2001 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

FIELD; VISCOSITY; FLOW; FERROFLUIDS; PARTICLES; DYNAMICS; LIQUIDS

DOI:

10.1134/1.1391522

Web of Science ID:

ISI:000170172000008

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1090-6509
Keywords-Plus	FIELD; VISCOSITY; FLOW; FERROFLUIDS; PARTICLES; DYNAMICS; LIQUIDS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	andrey.zubarev@usu.ru
ResearcherID-Numbers	Zubarev, Adrey/B-4752-2014
Number-of-Cited-References	17
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	5
Journal-ISO	J. Exp. Theor. Phys.
Doc-Delivery-Number	458AX