Phys. Rev. B 54, 6050–6053 (1996)Homogeneous to inhomogeneous transition in charged colloidsReceived 22 March 1996; revised 23 May 1996; published in the issue dated 1 September 1996 Using Monte Carlo simulations we report a homogeneous to inhomogeneous transition in colloidal dispersions as a function of surface charge density of the particles and ionic strength. Homogeneous crystalline suspensions are found to develop voids coexisting with dense ordered and disordered structures beyond a critical charge density. The present results explain the reported experimental observations of stable voids in equilibrium with ordered and disordered structures, which suggest long-range attraction between the particles. The limitations of the the Derjaguin-Landau-Verwey-Overbeek potential are discussed in the light of the present results. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.54.6050
DOI:
10.1103/PhysRevB.54.6050
PACS:
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