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In situ characterization of the high pressure – high temperature melting curve of platinum

DOI: 10.1038/s41598-019-49676-y DOI Help

Authors: Simone Anzellini (Diamond Light Source; CEA) , Virginia Monteseguro (Universidad de Valencia) , Enrico Bandiello (Universidad de Valencia) , Agnes Dewaele (CEA, DAM, DIF) , Leonid Burakovsky (Los Alamos National Laboratory) , Daniel Errandonea (Universidad de Valencia)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 9

State: Published (Approved)
Published: September 2019
Diamond Proposal Number(s): 21190

Open Access Open Access

Abstract: In this work, the melting line of platinum has been characterized both experimentally, using synchrotron X-ray diffraction in laser-heated diamond-anvil cells, and theoretically, using ab initio simulations. In the investigated pressure and temperature range (pressure between 10 GPa and 110 GPa and temperature between 300 K and 4800 K), only the face-centered cubic phase of platinum has been observed. The melting points obtained with the two techniques are in good agreement. Furthermore, the obtained results agree and considerably extend the melting line previously obtained in large-volume devices and in one laser-heated diamond-anvil cells experiment, in which the speckle method was used as melting detection technique. The divergence between previous laser-heating experiments is resolved in favor of those experiments reporting the higher melting slope.

Journal Keywords: Materials science; Phase transitions and critical phenomena

Subject Areas: Physics


Instruments: I15-Extreme Conditions

Other Facilities: ESRF

Documents:
s41598-019-49676-y.pdf