### Abstract

In a low field approximation, using the dipolar Yukawa fluid model (in mean spherical approximation as a reference system) a consistent field-dependent free energy expression is proposed for the calculation of the vapour-liquid equilibrium of polar fluids in an applied electric field. A perturbation theory high field approximation expression of the free energy is also proposed to study the field-dependent properties of fluids. In the high field approximation, equations for the field-dependent polarization and for the nonlinear dielectric constant (or Piekara constant) are also predicted. It has been discussed that our approximations are appropriate to describe the vapour-liquid-like phase equilibria and the magnetization curves of magnetic fluids.

Original language | English |
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Pages (from-to) | 1819-1828 |

Number of pages | 10 |

Journal | Molecular Physics |

Volume | 101 |

Issue number | 12 |

Publication status | Published - Jun 20 2003 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

*Molecular Physics*,

*101*(12), 1819-1828.

**Theoretical investigations of the vapour-liquid equilibrium and dielectric properties of dipolar Yukawa fluids in an external field.** / Szalai, I.; Chan, Kwong Yu; Tang, Yuk Wai.

Research output: Contribution to journal › Article

*Molecular Physics*, vol. 101, no. 12, pp. 1819-1828.

}

TY - JOUR

T1 - Theoretical investigations of the vapour-liquid equilibrium and dielectric properties of dipolar Yukawa fluids in an external field

AU - Szalai, I.

AU - Chan, Kwong Yu

AU - Tang, Yuk Wai

PY - 2003/6/20

Y1 - 2003/6/20

N2 - In a low field approximation, using the dipolar Yukawa fluid model (in mean spherical approximation as a reference system) a consistent field-dependent free energy expression is proposed for the calculation of the vapour-liquid equilibrium of polar fluids in an applied electric field. A perturbation theory high field approximation expression of the free energy is also proposed to study the field-dependent properties of fluids. In the high field approximation, equations for the field-dependent polarization and for the nonlinear dielectric constant (or Piekara constant) are also predicted. It has been discussed that our approximations are appropriate to describe the vapour-liquid-like phase equilibria and the magnetization curves of magnetic fluids.

AB - In a low field approximation, using the dipolar Yukawa fluid model (in mean spherical approximation as a reference system) a consistent field-dependent free energy expression is proposed for the calculation of the vapour-liquid equilibrium of polar fluids in an applied electric field. A perturbation theory high field approximation expression of the free energy is also proposed to study the field-dependent properties of fluids. In the high field approximation, equations for the field-dependent polarization and for the nonlinear dielectric constant (or Piekara constant) are also predicted. It has been discussed that our approximations are appropriate to describe the vapour-liquid-like phase equilibria and the magnetization curves of magnetic fluids.

UR - http://www.scopus.com/inward/record.url?scp=0346428477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346428477&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0346428477

VL - 101

SP - 1819

EP - 1828

JO - Molecular Physics

JF - Molecular Physics

SN - 0026-8976

IS - 12

ER -