Chain-like structures in polydisperse ferrofluids / Zubarev AY,Iskakova LY // PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS. - 2004. - V. 335, l. 3-4. - P. 314-324.

ISSN/EISSN:

0378-4371 / 1873-2119

Type:

Article

Abstract:

An influence of polydispersity of ferrofluids on structure of internal chain-like aggregates is studied theoretically. For maximal simplification of analysis we consider a bidisperse model of ferrofluid consisting of relatively big and small particles. In accordance with the composition of many real ferrofluids, we suppose that the energy of magnetic interaction between big particles strongly exceeds thermal energy kT of the system; the energy of interaction between big and small particles is about kT; between two small particles it is significantly smaller than kT. This gives us ground to consider the model of chains, consisting of only big particles, surrounded by the gas of small ones. Both magnetic and steric interactions of the chains with this gas are taken into account. The analysis shows that the magnetic interaction decreases the length of the chains, whereas steric interaction increases it. The final influence of the gas of small particles on the chain is a result of competition of these interactions. Our estimates show that under the increase of hydrodynamical volume concentration of the small particles from zero till 30\% the chains can vary several-fold in mean size. (C) 2003 Elsevier B.V. All rights reserved.

Author keywords:

ferrofluids; chains; polydispersity DIPOLAR FLUIDS; FIELD

DOI:

10.1016/j.physa.2003.12.029

Web of Science ID:

ISI:000220067600002

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR 15
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-2119
Keywords-Plus	DIPOLAR FLUIDS; FIELD
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	24
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	2
Journal-ISO	Physica A
Doc-Delivery-Number	801AA