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Electrical conductivity of binary mixtures near the critical point
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In this article, the electrical conductivity σ of several liquid mixtures was measured near their respective critical points, and it was shown that the singularity could be characterized by a critical exponent ϑ=0.70+0.15−0.10.Abstract:
The electrical conductivity σ of several liquid mixtures was measured near their respective critical points. The systems studied were pure phenol–water, KCl‐doped phenol–water, and isobutyric acid–water. The measurements spanned the reduced temperature range 10−5≲e≲10−2, where e≡ (T‐Tc)/Tc. All systems clearly showed the existence of a singular contribution to the conductivity. A least‐squares fit of the data to the equation, (σ‐σc)/σc∝eϑ+ background terms, showed that the singularity could be characterized by a critical exponent ϑ=0.70+0.15−0.10. A possible explanation of this singularity is offered which uses percolation theory in the mean field limit. This percolation approach yields ϑ=2β, in accord with our own observations. The exponent β (?1/3) characterizes the shape of the coexistence curve.read more
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Journal ArticleDOI
Theory of Dynamic Critical Phenomena
TL;DR: The renormalization group theory has been applied to a variety of dynamic critical phenomena, such as the phase separation of a symmetric binary fluid as mentioned in this paper, and it has been shown that it can explain available experimental data at the critical point of pure fluids, and binary mixtures, and at many magnetic phase transitions.
Journal ArticleDOI
Equilibrium Critical Phenomena in Binary Liquid Mixtures
TL;DR: A comprehensive and critical review of recent experimental studies of equilibrium critical phenomena in binary liquid mixtures can be found in this article, where it is shown that binary liquid mixture constitute ideal systems in which to attempt a detailed verification and evaluation of some predictions of the modern theories of critical phenomena.
Journal ArticleDOI
Nonlinear dielectric effect near the critical point of binary mixtures
Wieslaw Pyzuk,Krzysztof Zboiński +1 more
TL;DR: The nonlinear dielectric effect (NDE) was measured in two binary systems near the critical point and the singular part was proportional to (T − T c ) − 1 2 in agreement with Snider's theory as applied to NDE as mentioned in this paper.
Journal ArticleDOI
Critical behavior of electrical resistivity in polar + nonpolar binary liquid systems
TL;DR: In this article, the behavior of electrical resistivity in the critical region of three polar + nonpolar binary liquid systems CS2 +(CH3CO)2O, C6H12+C3CO 2O, and n•C7H16+CH3 CO 2O is studied.
References
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Book
Introduction to Phase Transitions and Critical Phenomena
H. Eugene Stanley,Guenter Ahlers +1 more
TL;DR: In this article, the authors present a paperback edition of a distinguished book, originally published by Clarendon Press in 1971, which is at the level at which a graduate student who has studied condensed matter physics can begin to comprehend the nature of phase transitions, which involve the transformation of one state of matter into another.
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Percolation and Conduction
TL;DR: In this article, an extension of percolation theory to treat transport is described, and a general expression for the conductance of such networks is derived, which relates to the spin-stiffness coefficient of dilute ferromagnet.
Journal ArticleDOI
The Renormalization group and the epsilon expansion
TL;DR: In this paper, the modern formulation of the renormalization group is explained for both critical phenomena in classical statistical mechanics and quantum field theory, and the expansion in ϵ = 4−d is explained [ d is the dimension of space (statistical mechanics) or space-time (quantum field theory)].
Journal ArticleDOI
The theory of equilibrium critical phenomena
TL;DR: The theory of critical phenomena in systems at equilibrium is reviewed at an introductory level with special emphasis on the values of the critical point exponents α, β, γ,..., and their interrelations as mentioned in this paper.
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