Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields

Chin Yih Hong, Herng Er Horng, F. C. Kuo, S. Y. Yang, H. C. Yang, J. M. Wu

    Research output: Contribution to journalArticle

    55 Citations (Scopus)

    Abstract

    When a magnetic fluid thin film is subjected to a perpendicular magnetic field H, the particles in the film agglomerate and form particle columns. With the increasing H, the columns evolve from a disordered column phase to the first-level hexagonal structural pattern and finally reach the second-level hexagonal structural pattern through a phase transition. During the transition phase, each column split into two columns. The split of a column may be attributed to the further alignment of the magnetic particles in each column under higher H's. Hence the dipolar repulsive force in each column becomes dominant and causes the split of a column. The formation of the second-level hexagonal structure reveals that the minimum energy of the equilibrium system of magnetic fluid thin films under perpendicular magnetic fields has multiple local minima when H varies.

    Original languageEnglish
    Pages (from-to)2196-2198
    Number of pages3
    JournalApplied Physics Letters
    Volume75
    Issue number15
    DOIs
    Publication statusPublished - 1999 Oct 11

    Fingerprint

    fluid films
    magnetic fields
    fluids
    thin films
    alignment

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields. / Hong, Chin Yih; Horng, Herng Er; Kuo, F. C.; Yang, S. Y.; Yang, H. C.; Wu, J. M.

    In: Applied Physics Letters, Vol. 75, No. 15, 11.10.1999, p. 2196-2198.

    Research output: Contribution to journalArticle

    Hong, Chin Yih ; Horng, Herng Er ; Kuo, F. C. ; Yang, S. Y. ; Yang, H. C. ; Wu, J. M. / Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields. In: Applied Physics Letters. 1999 ; Vol. 75, No. 15. pp. 2196-2198.
    @article{38422927bf4f4f9aa564965439c3a531,
    title = "Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields",
    abstract = "When a magnetic fluid thin film is subjected to a perpendicular magnetic field H, the particles in the film agglomerate and form particle columns. With the increasing H, the columns evolve from a disordered column phase to the first-level hexagonal structural pattern and finally reach the second-level hexagonal structural pattern through a phase transition. During the transition phase, each column split into two columns. The split of a column may be attributed to the further alignment of the magnetic particles in each column under higher H's. Hence the dipolar repulsive force in each column becomes dominant and causes the split of a column. The formation of the second-level hexagonal structure reveals that the minimum energy of the equilibrium system of magnetic fluid thin films under perpendicular magnetic fields has multiple local minima when H varies.",
    author = "Hong, {Chin Yih} and Horng, {Herng Er} and Kuo, {F. C.} and Yang, {S. Y.} and Yang, {H. C.} and Wu, {J. M.}",
    year = "1999",
    month = "10",
    day = "11",
    doi = "10.1063/1.124962",
    language = "English",
    volume = "75",
    pages = "2196--2198",
    journal = "Applied Physics Letters",
    issn = "0003-6951",
    publisher = "American Institute of Physics Publising LLC",
    number = "15",

    }

    TY - JOUR

    T1 - Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields

    AU - Hong, Chin Yih

    AU - Horng, Herng Er

    AU - Kuo, F. C.

    AU - Yang, S. Y.

    AU - Yang, H. C.

    AU - Wu, J. M.

    PY - 1999/10/11

    Y1 - 1999/10/11

    N2 - When a magnetic fluid thin film is subjected to a perpendicular magnetic field H, the particles in the film agglomerate and form particle columns. With the increasing H, the columns evolve from a disordered column phase to the first-level hexagonal structural pattern and finally reach the second-level hexagonal structural pattern through a phase transition. During the transition phase, each column split into two columns. The split of a column may be attributed to the further alignment of the magnetic particles in each column under higher H's. Hence the dipolar repulsive force in each column becomes dominant and causes the split of a column. The formation of the second-level hexagonal structure reveals that the minimum energy of the equilibrium system of magnetic fluid thin films under perpendicular magnetic fields has multiple local minima when H varies.

    AB - When a magnetic fluid thin film is subjected to a perpendicular magnetic field H, the particles in the film agglomerate and form particle columns. With the increasing H, the columns evolve from a disordered column phase to the first-level hexagonal structural pattern and finally reach the second-level hexagonal structural pattern through a phase transition. During the transition phase, each column split into two columns. The split of a column may be attributed to the further alignment of the magnetic particles in each column under higher H's. Hence the dipolar repulsive force in each column becomes dominant and causes the split of a column. The formation of the second-level hexagonal structure reveals that the minimum energy of the equilibrium system of magnetic fluid thin films under perpendicular magnetic fields has multiple local minima when H varies.

    UR - http://www.scopus.com/inward/record.url?scp=0001081180&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0001081180&partnerID=8YFLogxK

    U2 - 10.1063/1.124962

    DO - 10.1063/1.124962

    M3 - Article

    AN - SCOPUS:0001081180

    VL - 75

    SP - 2196

    EP - 2198

    JO - Applied Physics Letters

    JF - Applied Physics Letters

    SN - 0003-6951

    IS - 15

    ER -