MAGNETIC PROPERTIES OF FERROFLUID EMULSIONS: THE EFFECT OF DROPLET ELONGATION / Ivanov A. O.,Kuznetsova O. B.,Subbotin I. M. // MAGNETOHYDRODYNAMICS. - 2013. - V. 49, l. 3-4, SI. - P. 287-292.

ISSN/EISSN:

0024-998X / 1574-0579

Type:

Article

Abstract:

The paper is concerned with a theoretical explanation of the experimentally observed effect of non-monotonic field dependence of the effective magnetic permeability of ferrofluid emulsion. In a weak magnetic field, the growth of the induced droplet magnetic moment is faster than the linear one due to the droplet elongation accompanied by the reduction of the demagnetizing field. Thus, the emulsion magnetic permeability increases in weak magnetic fields. Further strengthening of the external magnetic field cannot lead to a significant decrease of the demagnetizing field, as the droplets are already highly elongated. On the other hand, the magnetic susceptibility of the ferrofluid reduces with the field strength. Hence, the effective magnetic permeability of the ferrofluid emulsion starts decreasing. The developed theoretical model describes well the experimental observations.

Author keywords:

FIELDS

DOI:

нет данных

Web of Science ID:

ISI:000328870000007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL-DEC
Publisher	UNIV LATVIA INST PHYSICS
Address	MIERA 32, SALASPILS, LV-2169, LATVIA
Language	English
EISSN	1574-0579
Keywords-Plus	FIELDS
Research-Areas	Mechanics; Physics
Web-of-Science-Categories	Mechanics; Physics, Fluids \& Plasmas
ResearcherID-Numbers	Ivanov, Alexey/E-4442-2011
ORCID-Numbers	Ivanov, Alexey/0000-0001-8239-4039
Funding-Acknowledgement	Russian Foundation for Basic Research; Government of Sverdlovsk Region {[}13-01-96032\_r\_ural]; Ministry of Education and Science of the Russian Federation {[}2.609.2011]
Funding-Text	This research was carried out under the financial support from the Russian Foundation for Basic Research and the Government of Sverdlovsk Region, grant No. 13-01-96032\_r\_ural, and was partly supported by the Ministry of Education and Science of the Russian Federation, project No.2.609.2011.
Number-of-Cited-References	11
Usage-Count-Since-2013	12
Journal-ISO	Magnetohydrodynamics
Doc-Delivery-Number	278DT