Thermodynamics of ferrofluids in applied magnetic fields

Ekaterina A. Elfimova*, Alexey O. Ivanov, Philip J. Camp

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number042310
Number of pages11
JournalPhysical Review E - Statistical, Nonlinear and Soft Matter Physics
Volume88
Issue number4
DOIs
Publication statusPublished - 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

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