## Abstract

The thermodynamic properties of ferrofluids in applied magnetic fields are examined using theory and computer simulation. The dipolar hard sphere model is used. The second and third virial coefficients (B-2 and B-3) are evaluated as functions of the dipolar coupling constant lambda, and the Langevin parameter alpha. The formula for B-3 for a system in an applied field is different from that in the zero-field case, and a derivation is presented. The formulas are compared to results from Mayer-sampling calculations, and the trends with increasing lambda and alpha are examined. Very good agreement between theory and computation is demonstrated for the realistic values lambda

Original language | English |
---|---|

Article number | 042310 |

Number of pages | 11 |

Journal | Physical Review E - Statistical, Nonlinear and Soft Matter Physics |

Volume | 88 |

Issue number | 4 |

DOIs | |

Publication status | Published - 23 Oct 2013 |

## Keywords

- DIPOLAR HARD-SPHERES
- LIQUID-VAPOR COEXISTENCE
- SIMPLE POLAR FLUIDS
- CRITICAL-TEMPERATURE
- ORIENTATIONAL ORDER
- PERTURBATION-THEORY
- COMPUTER-SIMULATIONS
- VIRIAL-COEFFICIENT
- PHASE
- TRANSITION