A reversible transition in liquid Bi under pressure

The electrical resistance of solid and liquid Bi has been measured at high pressures and temperatures using a novel experimental design for high sensitivity measurements utilizing a “Paris-Edinburgh” toroid large volume press. An anomalous sharp decrease in resistivity with increasing temperature at...

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Bibliographic Details
Published in:The Journal of chemical physics 2018-01, Vol.148 (3), p.034505-034505
Main Authors: Emuna, M., Matityahu, S., Yahel, E., Makov, G., Greenberg, Y.
Format: Article
Language:English
Subjects:
Design of experiments
Phase diagrams
Phase transitions
Physics
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Summary:The electrical resistance of solid and liquid Bi has been measured at high pressures and temperatures using a novel experimental design for high sensitivity measurements utilizing a “Paris-Edinburgh” toroid large volume press. An anomalous sharp decrease in resistivity with increasing temperature at constant pressures was observed in the region beyond melting which implies a possible novel transition in the melt. The proposed transition was observed across a range of pressures both in heating and cooling cycles of the sample demonstrating its reversibility. From the measurements it was possible to determine a “phase-line” of this transition on the Bi pressure-temperature phase diagram terminating at the melting curve.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.5001916