ABSTRACT A simple statistical mechanical theory based on compound formation model (compound Aμ Bv formed by the preferential arrangement of A and B constituent atoms of the alloy AB, μA + νB ≒ Aμ Bv) has been used to investigate the phenomena of compound formation in NaCd liquid alloys through the study of concentration fluctuation in the long wavelength region [Scc(0)] and chemical short range order parameter (α1). The study explains the observed asymmetry successfully and suggest the existence of Cd2Na complex in the melt. The tendency of compound has been found to be weak. A tendency of inversion from segregation to order although very small, has been observed, in NaCd liquid alloys.
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nullS. Chatterjee, L. Prasad and A. Bhattarai, "Microscopic Structure of NaCd Compound Forming Binary Molten Alloys," Materials Sciences and Applications, Vol. 2 No. 6, 2011, pp. 605-608. doi: 10.4236/msa.2011.26081.
 A.B. Bhatia and W.H. Hargrove, “Concentration fluctuations and thermodynamic properties of some compound forming binary molten systems” Physical Review B, Vol. 10, No. 8, 1974, pp. 3186-3196.
 R.N. Singh, “Short-range order and concentration fluctuations in binary molten alloys” Candian Journal of Physics, Vol. 65, No. 3, 1987, pp. 309-325.
 A.B. Bhatia, W.H. Hargrove and D.E. Thorntron, “Concentration fluctuations and partial structure factors of compound-forming binary molten alloys” Physical Review B, Vol. 9, No. 2, 1974, pp. 435-444.
 L.C. Prasad, R.N. Singh, V. N. Singh and S.K. Chatterjee, “Compound formation in Sn-based liquid alloys”Physica B: Physics of Condensed Matter, Vol. 215, No. 2-3, 1995, pp. 225-232.
 L.C. Prasad, S.K. Chatterjee and V.N. Singh, “Intermetallic associations in AlMg liquid alloys” Physica B: Physics of Condensed Matter, Vol. 217, No. 3-4, 1996, pp. 285- 291.
 R. Hultgren, P.D. Desai, D.T. Hawkins, M. Gleiser and K.K. Kelley, “Selected Values of the Thermodynamic Properties of Binary Alloys” ASM, Metal Park, 1973.
 L.C. Prasad, R.N. Singh, “A Quasi-lattice Model for the Thermodynamic Properties of Au-Zn Liquid Alloys” Physics and Chemistry of Liquids, Volume 22, No. 1 & 2 1990, pp. 1-9.
 K. Hoshino and W. H. Young, “Entropy of mixing of compound forming liquid binary alloys” Journal of Physics F: Metal Physics, Vol. 10, No. 7, 1980, pp.1365.
 N.K.P Singh, R.N. Singh and R. B. Choudhary, “Thermodynamic investigation of atomic order in AlMg liquid alloys” Journal of Physics: Condensed Matter, Vol. 3, No. 20, 1991, pp. 3635.
 R.N. Singh and F. Sommer, “Temperature dependence of the thermodynamic functions of strongly interacting liquid alloys” Journal of Physics: Condensed Matter, Vol. 4, No. 24, 1992, pp. 5345.
 P.J. Flory, “Thermodynamics of High Polymer Solutions” Journal of Chemical Physics, Vol. 10, 1942, pp. 51-61.
 S.K. Chatterjee and L.C. Prasad, “Microscopic structure of CuSn compound forming binary molten alloys”, Indian Journal of Pure and Applied Physics, Vol. 42, 2004, pp. 283-287.