Field-dependent phase diagram of the structural pattern in a ferrofluid film under perpendicular magnetic field

Chin Yih Hong; Chih Hao Lin; Chun Hui Chen; Y. P. Chiu; S. Y. Yang; H. E. Horng; H. C. Yang

doi:10.1016/S0304-8853(00)00826-X

Field-dependent phase diagram of the structural pattern in a ferrofluid film under perpendicular magnetic field

Chin Yih Hong^*, Chih Hao Lin, Chun Hui Chen, Y. P. Chiu, S. Y. Yang, H. E. Horng, H. C. Yang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Influences of both the magnetic field strength H and the sweep rate dH/dt on the structural pattern evolution in a magnetic fluid film under perpendicular fields are systematically investigated. When the magnetic field is increased at a given rate, the structure evolves from a monodispersed state to a disordered one, then to the first-level ordered hexagonal structure, and finally to the second-level ordered structure through a transition state. With a higher dH/dt, the range of the applied magnetic field corresponding to the first-level ordered structure is widened and the field H_s, at which the transition occurs becomes higher. An empirical power law H_s ∞ (dH/dt) ^0.4 was found. A phase diagram for the magnetic fluid film in the H-dH/dt plane is presented.

Original language	English
Pages (from-to)	1881-1883
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	226-230
Issue number	PART II
DOIs	https://doi.org/10.1016/S0304-8853(00)00826-X
Publication status	Published - 2001
Externally published	Yes

Keywords

Hexagonal
Labyrinth pattern
Magnetic fluid
Phase diagram
Structure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(00)00826-X

Cite this

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title = "Field-dependent phase diagram of the structural pattern in a ferrofluid film under perpendicular magnetic field",

abstract = "Influences of both the magnetic field strength H and the sweep rate dH/dt on the structural pattern evolution in a magnetic fluid film under perpendicular fields are systematically investigated. When the magnetic field is increased at a given rate, the structure evolves from a monodispersed state to a disordered one, then to the first-level ordered hexagonal structure, and finally to the second-level ordered structure through a transition state. With a higher dH/dt, the range of the applied magnetic field corresponding to the first-level ordered structure is widened and the field Hs, at which the transition occurs becomes higher. An empirical power law Hs ∞ (dH/dt) 0.4 was found. A phase diagram for the magnetic fluid film in the H-dH/dt plane is presented.",

keywords = "Hexagonal, Labyrinth pattern, Magnetic fluid, Phase diagram, Structure",

author = "Hong, {Chin Yih} and Lin, {Chih Hao} and Chen, {Chun Hui} and Chiu, {Y. P.} and Yang, {S. Y.} and Horng, {H. E.} and Yang, {H. C.}",

note = "Funding Information: This work was supported by the National Science Council under Grant No. 89-2212-E-212-021.",

year = "2001",

doi = "10.1016/S0304-8853(00)00826-X",

language = "English",

volume = "226-230",

pages = "1881--1883",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "PART II",

}

TY - JOUR

T1 - Field-dependent phase diagram of the structural pattern in a ferrofluid film under perpendicular magnetic field

AU - Hong, Chin Yih

AU - Lin, Chih Hao

AU - Chen, Chun Hui

AU - Chiu, Y. P.

AU - Yang, S. Y.

AU - Horng, H. E.

AU - Yang, H. C.

N1 - Funding Information: This work was supported by the National Science Council under Grant No. 89-2212-E-212-021.

PY - 2001

Y1 - 2001

N2 - Influences of both the magnetic field strength H and the sweep rate dH/dt on the structural pattern evolution in a magnetic fluid film under perpendicular fields are systematically investigated. When the magnetic field is increased at a given rate, the structure evolves from a monodispersed state to a disordered one, then to the first-level ordered hexagonal structure, and finally to the second-level ordered structure through a transition state. With a higher dH/dt, the range of the applied magnetic field corresponding to the first-level ordered structure is widened and the field Hs, at which the transition occurs becomes higher. An empirical power law Hs ∞ (dH/dt) 0.4 was found. A phase diagram for the magnetic fluid film in the H-dH/dt plane is presented.

AB - Influences of both the magnetic field strength H and the sweep rate dH/dt on the structural pattern evolution in a magnetic fluid film under perpendicular fields are systematically investigated. When the magnetic field is increased at a given rate, the structure evolves from a monodispersed state to a disordered one, then to the first-level ordered hexagonal structure, and finally to the second-level ordered structure through a transition state. With a higher dH/dt, the range of the applied magnetic field corresponding to the first-level ordered structure is widened and the field Hs, at which the transition occurs becomes higher. An empirical power law Hs ∞ (dH/dt) 0.4 was found. A phase diagram for the magnetic fluid film in the H-dH/dt plane is presented.

KW - Hexagonal

KW - Labyrinth pattern

KW - Magnetic fluid

KW - Phase diagram

KW - Structure

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U2 - 10.1016/S0304-8853(00)00826-X

DO - 10.1016/S0304-8853(00)00826-X

M3 - Article

AN - SCOPUS:33748699578

SN - 0304-8853

VL - 226-230

SP - 1881

EP - 1883

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - PART II

ER -

Field-dependent phase diagram of the structural pattern in a ferrofluid film under perpendicular magnetic field

Abstract

Keywords

ASJC Scopus subject areas

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