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absorption angle anomaly antiferromagnetic approximation asymptotic atoms behavior calculated calorimeter cell Chem coefficient coexistence curve composition constant convection correct correlation function corresponding critical density critical mixing critical opalescence critical point critical region critical temperature Curie point Curie temperature Debye deviations diffusion discussion Domb effect energy entropy equation equilibrium expansion experimental experiments extrapolated ferromagnet finite fluctuations fluid frequency gradient Heisenberg interaction Ising model isotherm lambda point lambda transition lattice light scattering line width linear liquid helium liquid mixtures liquid-vapor logarithmic long range Lounasmaa M. E. Fisher magnetic mdeg measurements method molecular field neutron observed obtained parameter perature percent phase phenomena Phys plot pressure Proc sample scattered intensity shown in figure singularity specific heat spin waves susceptibility tempera temperature dependence theoretical theory thermal conductivity thermodynamic tion transition ture vapor velocity versus viscosity Waals zero
Page 48 - Paper presented at the Symposium on Inelastic Scattering of Neutrons in Solids and Liquids, Chalk River, Canada, Sept.
Page 50 - Tc . A first order transition is not predicted by any of the simple Ising models at any finite temperature, and it is probably a result of the long range interactions. Accompanying the change from antiferromagnetic to paramagnetic order in an applied field there are magneto-caloric effects and these have been studied by measuring adiabatic changes of temperature with field . In contrast to the isothermal transitions, which are completely reversible, the adiabatic changes showed a large and...
Page 25 - This property depends on the liquid correlation functions, that is density correlation function, whereas the second derivative of the free energy with respect to the concentration depends on the concentration correlation function. One might well expect these correlation functions to have the same range and the same analytic behavior. Thus perhaps dp/dp would reflect the same y behavior. JS Rowlinson: It would be very difficult to measure the .>/> .if in a dense fluid with the precision that is needed...
Page 42 - This research was supported by the Advanced Research Projects Agency under contract F-49620-93-C-0076.
Page 141 - F"(K, (a) retain this form or does a distinct diffusive mode appear in addition? We may speculate that an analogy to the classical fluid may exist. A classical fluid, at small K, may be described by the usual equations of hydrodynamics. In the absence of any dissipative effects, viscosity or thermal conductivity, the relaxation function [equivalent to /r-"(K, w)] has two 8-function peaks at ±csK where cs is the velocity of sound.
Page 64 - AM Clogston, JP Gordon, V. jaccarino, M. Peter, and LR Walker, Phys. Rev. 117, 1222 (1960).  RG Shulman and V.
Page 25 - DS Gaunt, ME Fisher, MF Sykes and JW Essam, Phys. Rev. Letters 13, 713 (1964).
Page 26 - GH Gilmer, W. Gilmore, J. Huang, and WW Webb. Phys. Rev. Letters 14, 491 (1965).
Page 154 - The first term on the right side of eq (27) corresponds to the dc photocurrent. This dc current does not enter the spectrum analyzer as it is removed with an RC blocking filter as shown in figure 1. Thus the power spectrum of the current fluctuations entering the spectrum analyzer is given by the second term on the right side of eq (27). The spectrum analyzer uses a linear full wave rectifier as its detector element. As a result...
Page 41 - Domb, NW Dalton, GS Joyce and DW Wood, Proc. International Conference on Magnetism, Nottingham 1964, p. 85.  C. Domb and MF Sykes. Phys. Rev. 128, 168 (1962): J. Gammel, W. Marshall and L. Morgan, Proc. Roy. Soc. A275, 257(1963). 16] GS Rushbrooke and PJ Wood, Mol.