Title

Magnetically modulated optical transmission of magnetic fluid films

Authors

Authors

H. E. Horng; S. Y. Yang; W. S. Tse; H. C. Yang; W. L. Luo;C. Y. Hong

Comments

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Abbreviated Journal Title

J. Magn. Magn. Mater.

Keywords

magnetic fluid; transmittance; attenuation distance; ORDERED STRUCTURES; THIN-FILMS; FERROFLUIDS; FIELD; Materials Science, Multidisciplinary; Physics, Condensed Matter

Abstract

The optical transmission of the magnetic fluid film under perpendicular magnetic fields was investigated by measuring the transmitted intensity of the normally incident light through the film. The transmittance I/I-0 of the magnetic fluid film was observed to decrease with the increase of the magnetic field strength H due to the reduction in the area occupied by the relatively optic transparent liquid phase. Moreover, under a given H, the transmittance decreased exponentially with the increasing film thickness L, i.e. I/I-0 = exp(-L/delta), where the delta denotes the attenuation distance. It was further found that the delta varies with the magnetic field strength and the concentration of the fluid, but is independent of the sweep rate of the field. (C) 2002 Elsevier Science B.V. All rights reserved.

Journal Title

Journal of Magnetism and Magnetic Materials

Volume

252

Issue/Number

1-3

Publication Date

1-1-2002

Document Type

Article; Proceedings Paper

Language

English

First Page

104

Last Page

106

WOS Identifier

WOS:000179686200034

ISSN

0304-8853

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