Scaling Behavior of Field-Induced Aggregates in Ferrofluids

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

An ordered hexagonal array of aggregates can form in thin ferrofluid layers when an external magnetic field is applied. Using the Helmholtz free energy for this system, we calculate the optimum spacing for these aggregates. Results show excellent agreement with experimental findings as a function of field strength and layer thickness. Our analysis yields a crossover in the exponent for the scaling behavior of the aggregate spacing as a function of plate separation, in agreement with experiment. For the first time, we report a similar crossover in the scaling behavior of the aggregate spacing as a function of the magnetic field. The mechanisms responsible for both crossovers are introduced and discussed.
2 eps figures

Keywords

Soft Condensed Matter

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/22022

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0308261
 http://arxiv.org/abs/cond-mat/0308261

Collections

arXiv