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

Journal Article · · Scientific Reports
 [1];  [2];  [2];  [3];  [4];  [2]
  1. Diamond Light Source Ltd, Diamond House, Harwell Science Campus, Didcot, Oxfordshire, United Kingdom; DOE/OSTI
  2. Departamento de Física Aplicada - Instituto de Ciencia de Materiales, Matter at High Pressure (MALTA) Consolider Team, Universidad de Valencia, Edificio de Investigación, Valencia, Spain
  3. CEA, DAM, DIF, F-91297, Arpajon, France
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Div.

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.

Research Organization:
Los Alamos National Lab (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); Natural Environment Research Council of Great Britain and Northern Ireland; Spanish Ministerio de Ciencia, Innovación y Universidades; Spanish Research Agency; European Fund for Regional Development; Generalitat Valenciana
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1624489
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 9; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Thermal equation of state of ruthenium characterized by resistively heated diamond anvil cell journal October 2019
Reentrant melting of sodium, magnesium, and aluminum: General trend journal October 2019
Melting curve and phase diagram of vanadium under high-pressure and high-temperature conditions journal September 2019
Resistivity, Seebeck coefficient, and thermal conductivity of platinum at high pressure and temperature journal December 2019
Topological Equivalence of the Phase Diagrams of Molybdenum and Tungsten journal January 2020
Oxidation of High Yield Strength Metals Tungsten and Rhenium in High-Pressure High-Temperature Experiments of Carbon Dioxide and Carbonates journal December 2019

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