Pair Correlations in a Bidisperse Ferrofluid in an External Magnetic Field: Theory and Computer Simulations / Nekhoroshkova Yu. E.,Goldina O. A.,Camp P. J.,Elfimova E. A.,Ivanov A. O. // JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - 2014. - V. 118, l. 3. - P. 442-456.

ISSN/EISSN:

1063-7761 / 1090-6509

Type:

Article

Abstract:

The pair distribution function g(r) for a ferrofluid modeled by a bidisperse system of dipolar hard spheres is calculated. The influence of an external uniform magnetic field and polydispersity on g(r) and the related structure factor is studied. The calculation is performed by diagrammatic expansion methods within the thermodynamic perturbation theory in terms of the particle number density and the interparticle dipole-dipole interaction strength. Analytical expressions are provided for the pair distribution function to within the first order in number density and the second order in dipole-dipole interaction strength. The constructed theory is compared with the results of computer (Monte Carlo) simulations to determine the range of its validity. The scattering structure factor is determined using the Fourier transform of the pair correlation function g(r) - 1. The influence of the granulometric composition and magnetic field strength on the height and position of the first peak of the structure factor that is most amenable to an experimental study is analyzed. The data obtained can serve as a basis for interpreting the experimental small-angle neutron scattering results and determining the regularities in the behavior of the structure factor, its dependence on the fractional composition of a ferrofluid, interparticle correlations, and external magnetic field.

Author keywords:

ANGLE NEUTRON-SCATTERING; STRUCTURAL-PROPERTIES; INDUCED ANISOTROPY; FLUIDS; COLLOIDS; LIQUID

DOI:

10.1134/S1063776114030066

Web of Science ID:

ISI:000338339900013

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1090-6509
Keywords-Plus	ANGLE NEUTRON-SCATTERING; STRUCTURAL-PROPERTIES; INDUCED ANISOTROPY; FLUIDS; COLLOIDS; LIQUID
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	Ekaterina.Elfimova@usu.ru
ResearcherID-Numbers	Elfimova, Ekaterina/P-5003-2016 Ivanov, Alexey/E-4442-2011
ORCID-Numbers	Ivanov, Alexey/0000-0001-8239-4039 Elfimova, Ekaterian/0000-0002-8941-8184 Camp, Philip/0000-0002-7901-1364
Funding-Acknowledgement	Russian Foundation for Basic Research {[}12-02-12063-ofi-m, 12-02-31079-mol]; Ministry of Education and Science of the Russian Federation {[}2.609.2011, 02.A03.21.0006]
Funding-Text	This work was supported in part by the Russian Foundation for Basic Research (project nos. 12-02-12063-ofi-m, 12-02-31079-mol) and project no. 2.609.2011 and contract no. 02.A03.21.0006 from 27.03.2013, financed by the Ministry of Education and Science of the Russian Federation.
Number-of-Cited-References	47
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	24
Journal-ISO	J. Exp. Theor. Phys.
Doc-Delivery-Number	AK3QN