Thermodynamic and magnetic properties of ferrofluids in external uniform magnetic field / Vtulkina Ekaterina D.,Elfimova Ekaterina A. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2017. - V. 431, l. . - P. 218-221.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article; Proceedings Paper

Abstract:

The work is devoted to the theoretical investigation of the thermodynamic and magnetic properties of ferrofluids in applied magnetic field. Analytical expressions for the second and the third virial coefficients of dipolar hard spheres model were obtained by using the least-squares approximation to the simulation data (Elfimova et al., 2013 {[}4]). The expressions for the virial coefficients are presented as functions of the dipolar coupling constant lambda and the Langevin parameter alpha. The analytical formulas for the virial coefficients were incorporated in to so-called logarithmic free energy theory (Elfimova et al., 2012 {[}8]). This theory yields the Helmholtz free energy and the magnetization. The comparison between theory and computer simulation shows good agreement for lambda <= 2.The analytical expression of the Helmholtz free energy was also used to obtain a sedimentation equilibrium concentration profile of ferroparticles subjected to uniform magnetic and gravitational fields. (C) 2016 Published by Elsevier B.V.

Author keywords:

Ferrofluids; Dipolar hard spheres

DOI:

10.1016/j.jmmm.2016.08.033

Web of Science ID:

ISI:000399598600055

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN 1
Note	14th International Conference on Magnetic Fluids (ICMF), Ekaterinburg, RUSSIA, JUL 04-08, 2016
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	katevtulkina@mail.ru
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}02.A03.21.0006, 3.12.2014/K]
Funding-Text	Authors gratefully acknowledge research funding from the Ministry of Education and Science of the Russian Federation {[}Contract no. 02.A03.21.0006, Project no. 3.12.2014/K].
Number-of-Cited-References	11
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	ES5QV