Magnetically modulated optical transmission of magnetic fluid films

    Authors

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

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    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

    Share

    COinS