On the theory of phase transitions in magnetic fluids / Zubarev A. Yu.,Iskakova L. Yu. // JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - 2007. - V. 105, l. 5. - P. 1018-1034.

ISSN/EISSN:

1063-7761 / нет данных

Type:

Article

Abstract:

Particles of magnetic fluids (ferrofluids), as is known from experiments, can condense to bulk dense phases at low temperatures (that are close to room temperature) in response to an external magnetic field. It is also known that a uniform external magnetic field increases the threshold temperature of the observed condensation, thus stimulating, the condensation process. Within the framework of early theories, this phenomenon is interpreted as a classical gas-liquid phase transition in a system of individual particles involved in a dipole-dipole interaction. However, subsequent investigations have revealed that, before the onset of a bulk phase transition, particles can combine to form a chain cluster or, possibly, a topologically more complex heterogeneous cluster. In an infinitely strong magnetic field, the formation of chains apparently suppresses the onset of a gas-liquid phase transition and the condensation of magnetic particles most likely proceeds according to the scenario of a gas-solid phase transition with a wide gap between spinodal branches. This paper reports on the results of investigations into the specific features of the condensation of particles in the absence of an external magnetic field. An analysis demonstrates that, despite the formation of chains, the condensation of particles in this case can proceed according to the scenario of a gas-liquid phase transition with a critical point in the continuous binodal. Consequently, a uniform magnetic field not only can stimulate the condensation phase transition in a system of magnetic particles but also can be responsible for a qualitative change in the scenario of the phase transition. This inference raises the problem regarding a threshold magnetic field in which there occurs a change in the scenario of the phase transition.

Author keywords:

DIPOLAR HARD-SPHERES; LIQUID; AGGLOMERATION; FERROFLUIDS; ASSOCIATION; PARTICLES; RODS

DOI:

10.1134/S1063776107110143

Web of Science ID:

ISI:000251756000014

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	DIPOLAR HARD-SPHERES; LIQUID; AGGLOMERATION; FERROFLUIDS; ASSOCIATION; PARTICLES; RODS
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	45
Usage-Count-Since-2013	1
Journal-ISO	J. Exp. Theor. Phys.
Doc-Delivery-Number	242WD