Structure factor of model bidisperse ferrofluids with relatively weak interparticle interactions / Novak Ekaterina,Minina Elena,Pyanzina Elena,Kantorovich Sofia,Ivanov Alexey // JOURNAL OF CHEMICAL PHYSICS. - 2013. - V. 139, l. 22.

ISSN/EISSN:

0021-9606 / 1089-7690

Type:

Article

Abstract:

In the present manuscript we develop a theoretical approach to describe the pair correlation function of bidisperse magnetic dipolar hard-and soft-spheres. We choose bidisperse system as the first step to allow for polydispersity when studying thermodynamics of magnetic fluids. Using diagram technique we calculate the virial expansion of the pair correlation function up to the first order in density and fourth order in the dipolar strength. Even though, the radial distribution functions are extremely sensitive to the steric potential, we show that the behaviour of the isotropic centre-centre structure factor is almost indifferent to the type of the short-range repulsion. We extensively compare our theoretical results to the data of molecular dynamics simulations, which helps us to understand the range of validity of the virial expansion both on density and magnetic dipolar strength. We also investigate the influence of the granulometric composition on the height, width, and position of the structure factor first peak in order to clarify whether it is possible to extract structural information from experimentally measured small angle neutron scattering intensities. (C) 2013 AIP Publishing LLC.

Author keywords:

POLYDISPERSE HARD-SPHERES; ANGLE NEUTRON-SCATTERING; RADIAL-DISTRIBUTION FUNCTION; MAGNETIC FLUIDS; PHASE-SEPARATION; CHAIN FORMATION; DIPOLAR FLUIDS; MONTE-CARLO; DRUG; SYSTEMS

DOI:

10.1063/1.4834635

Web of Science ID:

ISI:000328729000045

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC 14
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
EISSN	1089-7690
Keywords-Plus	POLYDISPERSE HARD-SPHERES; ANGLE NEUTRON-SCATTERING; RADIAL-DISTRIBUTION FUNCTION; MAGNETIC FLUIDS; PHASE-SEPARATION; CHAIN FORMATION; DIPOLAR FLUIDS; MONTE-CARLO; DRUG; SYSTEMS
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Atomic, Molecular \& Chemical
Author-Email	sofia.kantorovich@univie.ac.at
ResearcherID-Numbers	Kantorovich, Sofia/H-4586-2011 Ivanov, Alexey/E-4442-2011 Novak, Ekaterina/K-9016-2013
ORCID-Numbers	Kantorovich, Sofia/0000-0001-5700-7009 Ivanov, Alexey/0000-0001-8239-4039 Novak, Ekaterina/0000-0002-4034-6861
Funding-Acknowledgement	RFBR {[}mol-a-ved 12-02-33106, mol-a 12-02-31330]; Ministry of Science and Education of of RF {[}2.609.2011]; Austrian Science Fund (FWF) {[}START-Projekt Y 627-N27]
Funding-Text	The work was done in the framework of the Russian Federation for Basic Research (RFBR) Grant No. 12-02-12063-ofi-m. S.K. is grateful to RFBR Grant mol-a-ved 12-02-33106, and has been supported by Ministry of Science and Education of RF 2.609.2011 and by Austrian Science Fund (FWF): START-Projekt Y 627-N27. E.N. and E.P. were supported by RFBR Grant mol-a 12-02-31330.
Number-of-Cited-References	64
Usage-Count-Since-2013	28
Journal-ISO	J. Chem. Phys.
Doc-Delivery-Number	276DT