Abstract
The complex formation model of Bhatia and Hargrove (BH) to explain the thermodynamic properties of compound forming A-B alloys is reformulated using a quasi-lattice picture. The formulation is explicitly carried out to an approximation where the pseudo-ternary alloy (of A and B atoms and AμBV complexes (μ, v small integers)), envisaged in BH, is treated in the quasichemical approximation. It is advantageous over BH in two major respects: Firstly, it gives useful insight into the two approximations used in BH, since these follow from it by simply going to a lower (zeroth) approximation and setting the coordination number z of the alloy to be z = 2 and z =∞. Secondly, unlike the BH approach, it provides also an expression for the short range order parameter α1, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α1 is given.
| Original language | English |
|---|---|
| Pages (from-to) | 177-190 |
| Number of pages | 14 |
| Journal | Physics and Chemistry of Liquids |
| Volume | 13 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jan 1 1984 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Condensed Matter Physics
Cite this
A Quasi-lattice Theory for Compound Forming Molten Alloys. / Bhatia, A. B.; Singh, R. N.
In: Physics and Chemistry of Liquids, Vol. 13, No. 3, 01.01.1984, p. 177-190.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - A Quasi-lattice Theory for Compound Forming Molten Alloys
AU - Bhatia, A. B.
AU - Singh, R. N.
PY - 1984/1/1
Y1 - 1984/1/1
N2 - The complex formation model of Bhatia and Hargrove (BH) to explain the thermodynamic properties of compound forming A-B alloys is reformulated using a quasi-lattice picture. The formulation is explicitly carried out to an approximation where the pseudo-ternary alloy (of A and B atoms and AμBV complexes (μ, v small integers)), envisaged in BH, is treated in the quasichemical approximation. It is advantageous over BH in two major respects: Firstly, it gives useful insight into the two approximations used in BH, since these follow from it by simply going to a lower (zeroth) approximation and setting the coordination number z of the alloy to be z = 2 and z =∞. Secondly, unlike the BH approach, it provides also an expression for the short range order parameter α1, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α1 is given.
AB - The complex formation model of Bhatia and Hargrove (BH) to explain the thermodynamic properties of compound forming A-B alloys is reformulated using a quasi-lattice picture. The formulation is explicitly carried out to an approximation where the pseudo-ternary alloy (of A and B atoms and AμBV complexes (μ, v small integers)), envisaged in BH, is treated in the quasichemical approximation. It is advantageous over BH in two major respects: Firstly, it gives useful insight into the two approximations used in BH, since these follow from it by simply going to a lower (zeroth) approximation and setting the coordination number z of the alloy to be z = 2 and z =∞. Secondly, unlike the BH approach, it provides also an expression for the short range order parameter α1, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α1 is given.
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U2 - 10.1080/00319108408080778
DO - 10.1080/00319108408080778
M3 - Review article
VL - 13
SP - 177
EP - 190
JO - Physics and Chemistry of Liquids
JF - Physics and Chemistry of Liquids
SN - 0031-9104
IS - 3
ER -