Structure and thermal expansion mechanism of liquid InBi compound

Abstract

The structure of the InBi compound in a liquid state in a wide temperature range has been investigated by X-ray diffraction method. As a result of analysis of temperature dependences of main structure parameters, the complicated mechanism of structural changes in the liquid state is revealed. Using the data of main structure parameters and proposed mechanism of structural transformations, the peculiarities of thermal expansion of the InBi melt have been explained.

Structure evolution and entropy increase in InBiGaSn equiatomic melt

“…Some discrepancies are observed in the height of the first and second peaks. Nevertheless, the structure of a multicomponent melt generally is close to the structure of InBi liquid alloy, which according to XRD data [17] and physical-chemical measurements, reveals the formation of chemically ordered atomic distribution. Therefore, obtained results allowed us to point out that the tendency to heterocoordinated atomic distribution in this binary melt is also repeated in quaternary InGaSnBi molten alloy.…”

“…Alloys, corresponding to the rest of systems, which are of eutectic type, attempt to form the structure, whose atomic distribution is close to random atomic distribution and as a result, the entropy is increased. For that reason, we have compared the SF for multi-component melt with ones for InBi and Ga 0.70 Bi 0.30 liquid alloys, which we obtained earlier [17][18][19] (Fig. 8).…”