Evidence for a temperature-driven structural transformation in liquid bismuth

Y. Greenberg; E. Yahel; E. N. Caspi; C. Benmore; B. Beuneu; M. P. Dariel; G. Makov

doi:10.1209/0295-5075/86/36004

Evidence for a temperature-driven structural transformation in liquid bismuth

Y. Greenberg, E. Yahel, E. N. Caspi, C. Benmore, B. Beuneu, M. P. Dariel, G. Makov

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

The thermodynamic properties of liquid bismuth have been explored from the melting point to 1100 °C by high-resolution measurements of the density, the heat capacity and the static structure factor. These physical properties display a number of anomalies. In particular, we have observed evidence for the presence of a temperature-driven liquid-liquid structural transformation that takes place at ambient pressure. The latter is characterized by a density discontinuity that occurs at 740 °C. Differential thermal analysis measurements revealed the endothermal nature of this transformation. A rearrangement of liquid bismuth structure was found by neutron diffraction measurements, supporting the existence of a liquid-liquid transformation far above the liquidus.

Original language	English
Article number	36004
Journal	EPL
Volume	86
Issue number	3
DOIs	https://doi.org/10.1209/0295-5075/86/36004
State	Published - 27 Nov 2009

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General Physics and Astronomy

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title = "Evidence for a temperature-driven structural transformation in liquid bismuth",

abstract = "The thermodynamic properties of liquid bismuth have been explored from the melting point to 1100 °C by high-resolution measurements of the density, the heat capacity and the static structure factor. These physical properties display a number of anomalies. In particular, we have observed evidence for the presence of a temperature-driven liquid-liquid structural transformation that takes place at ambient pressure. The latter is characterized by a density discontinuity that occurs at 740 °C. Differential thermal analysis measurements revealed the endothermal nature of this transformation. A rearrangement of liquid bismuth structure was found by neutron diffraction measurements, supporting the existence of a liquid-liquid transformation far above the liquidus.",

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AU - Greenberg, Y.

AU - Yahel, E.

AU - Caspi, E. N.

AU - Benmore, C.

AU - Beuneu, B.

AU - Dariel, M. P.

AU - Makov, G.

PY - 2009/11/27

Y1 - 2009/11/27

N2 - The thermodynamic properties of liquid bismuth have been explored from the melting point to 1100 °C by high-resolution measurements of the density, the heat capacity and the static structure factor. These physical properties display a number of anomalies. In particular, we have observed evidence for the presence of a temperature-driven liquid-liquid structural transformation that takes place at ambient pressure. The latter is characterized by a density discontinuity that occurs at 740 °C. Differential thermal analysis measurements revealed the endothermal nature of this transformation. A rearrangement of liquid bismuth structure was found by neutron diffraction measurements, supporting the existence of a liquid-liquid transformation far above the liquidus.

AB - The thermodynamic properties of liquid bismuth have been explored from the melting point to 1100 °C by high-resolution measurements of the density, the heat capacity and the static structure factor. These physical properties display a number of anomalies. In particular, we have observed evidence for the presence of a temperature-driven liquid-liquid structural transformation that takes place at ambient pressure. The latter is characterized by a density discontinuity that occurs at 740 °C. Differential thermal analysis measurements revealed the endothermal nature of this transformation. A rearrangement of liquid bismuth structure was found by neutron diffraction measurements, supporting the existence of a liquid-liquid transformation far above the liquidus.

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Evidence for a temperature-driven structural transformation in liquid bismuth

Abstract

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