Optical anisotropy induced by external magnetic fields on magnetic fluid films

S. Y. Yang, W. S. Tse, H. E. Horng, H. C. Yang, Chin Yih Hong

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    We examined the optical anisotropy of a magnetic fluid film under magnetic fields parallel to the plane of the film by detecting its birefringence effect. It was found, that the transmission axis of the transmitted light was rotated significantly by an angle An, with respect to the axis of the linearly polarized incident light when an external magnetic field is applied. The angle Δη increases with an increase of the field strength and then becomes saturated for higher fields. By comparing the detected Δη's with the corresponding structures formed in the magnetic fluid film under various magnetic fields, the angle Δη was found to be proportional to the ratio of the chain area to the liquid area in the film.

    Original languageEnglish
    Pages (from-to)1992-1994
    Number of pages3
    JournalJournal of Magnetism and Magnetic Materials
    Volume226-230
    Issue numberPART II
    DOIs
    Publication statusPublished - 2001 Jan 1

    Keywords

    • Anisotropy-field induced
    • Birefringence
    • Magnetic fluids

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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