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RESEARCH PRODUCT
In situ characterization of the high pressure – high temperature melting curve of platinum
Agnès DewaeleDaniel ErrandoneaLeonid BurakovskyVirginia MonteseguroEnrico BandielloSimone Anzellinisubject
DiffractionMaterials scienceAb initioAnalytical chemistrylcsh:Medicinechemistry.chemical_element02 engineering and technology01 natural sciencesMelting curve analysisArticlelaw.inventionlawPhase (matter)0103 physical scienceslcsh:Science010306 general physicsMultidisciplinarylcsh:RAtmospheric temperature range021001 nanoscience & nanotechnologySynchrotronMaterials sciencePhase transitions and critical phenomenachemistryMelting pointlcsh:Q0210 nano-technologyPlatinumdescription
AbstractIn 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-09-01 | Scientific Reports |