Ordered structures in Fe3O4 kerosene-based ferrofluids

Chin Yih Hong, I. J. Jang, H. E. Homg, C. J. Hsu, Y. D. Yao, H. C. Yang

Research output: Contribution to journalArticle

179 Citations (Scopus)

Abstract

The patterns of kerosene-based ferrofluid films in applied parallel and perpendicular magnetic fields were studied. The time dependence of quasiperiodic chains in a parallel magnetic field, the perfect hexagonal crystal structure in a weaker perpendicular field, and the labyrinthine pattern in a stronger perpendicular field were observed. The Fe3O4 kerosene-based ferrofluids that we used in this study were synthesized by the coprecipitation method. As the parallel external magnetic field was applied to a ferrofluid film, the ordered quasiperiodic chains were obtained. On the other hand, the initial nonequilibrium disordered quantum columns were formed in an applied perpendicular magnetic field, and an equilibrium hexagonal structure with columns occupying its vortices was formed after two hours. The distance between these columns decreases as the strength of the applied magnetic field increases, and hence, the patterns change gradually from the hexagonal structure to a labyrinthine pattern with the strength of the perpendicular field above a critical value. Thus, a phase transition exists in the ferrofluid film system as the field strength increase.

Original languageEnglish
Pages (from-to)4275-4277
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2A
Publication statusPublished - 1997 Apr 15

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kerosene
ferrofluids
magnetic fields
time dependence
field strength
vortices
crystal structure

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hong, C. Y., Jang, I. J., Homg, H. E., Hsu, C. J., Yao, Y. D., & Yang, H. C. (1997). Ordered structures in Fe3O4 kerosene-based ferrofluids. Journal of Applied Physics, 81(8 PART 2A), 4275-4277.

Ordered structures in Fe3O4 kerosene-based ferrofluids. / Hong, Chin Yih; Jang, I. J.; Homg, H. E.; Hsu, C. J.; Yao, Y. D.; Yang, H. C.

In: Journal of Applied Physics, Vol. 81, No. 8 PART 2A, 15.04.1997, p. 4275-4277.

Research output: Contribution to journalArticle

Hong, CY, Jang, IJ, Homg, HE, Hsu, CJ, Yao, YD & Yang, HC 1997, 'Ordered structures in Fe3O4 kerosene-based ferrofluids', Journal of Applied Physics, vol. 81, no. 8 PART 2A, pp. 4275-4277.
Hong CY, Jang IJ, Homg HE, Hsu CJ, Yao YD, Yang HC. Ordered structures in Fe3O4 kerosene-based ferrofluids. Journal of Applied Physics. 1997 Apr 15;81(8 PART 2A):4275-4277.
Hong, Chin Yih ; Jang, I. J. ; Homg, H. E. ; Hsu, C. J. ; Yao, Y. D. ; Yang, H. C. / Ordered structures in Fe3O4 kerosene-based ferrofluids. In: Journal of Applied Physics. 1997 ; Vol. 81, No. 8 PART 2A. pp. 4275-4277.
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