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Long-Ranged Orientational Order in Dipolar Fluids

M. Widom·H. Zhang·Carnegie-Mellon U
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Abstract

Recently Groh and Dietrich claimed the thermodynamic state of a dipolar fluid depends on the shape of the fluid's container. For example, a homogeneous fluid in a short fat container would phase separate when transferred to a tall skinny container of identical volume and temperature. Their calculation thus lacks a thermodynamic limit. We show that removal of demagnetizing fields restores the true, shape independent, thermodynamic limit. As a consequence, spontaneously magnetized liquids display inhomogeneous magnetization textures.

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M. Widom, H. Zhang, Carnegie-Mellon U. 1994-11-28. Long-Ranged Orientational Order in Dipolar Fluids. https://doi.org/10.1103/physrevlett.74.2616

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