High-Pressure Melting Curves and Liquid–Liquid Phase Transition
Abstract:Breaks on the melting lines in the pressure–temperature (Tm (P)) space are often handled as a hallmark of a liquid–liquid phase transition in pure materials. In this paper it is shown that there is no one-to-one agreement between these virtual breaks and liquid–liquid transitions. Four melting curves are analyzed; selenium, phosphorus, carbon and nitrogen. It is shown that a modified form of the Simon-Glatzel equation can describe experimental data, without introducing any break, demonstrating that the shape of the melting line is not an evidence for any further phase transition.
Document Type: Research Article
Publication date: December 1, 2010
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