### 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 AμB_{V} 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 α_{1}, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α_{1} is given.

Original language | English |
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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

*Physics and Chemistry of Liquids*,

*13*(3), 177-190. https://doi.org/10.1080/00319108408080778

**A Quasi-lattice Theory for Compound Forming Molten Alloys.** / Bhatia, A. B.; Singh, R. N.

Research output: Contribution to journal › Review article

*Physics and Chemistry of Liquids*, vol. 13, no. 3, pp. 177-190. https://doi.org/10.1080/00319108408080778

}

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.

UR - http://www.scopus.com/inward/record.url?scp=0021156976&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021156976&partnerID=8YFLogxK

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 -