ISIS Neutron and Muon Source Data Journal

The P-V-T Equation of State of Ni3Si

Abstract: Geophysical measurements, cosmo-chemical abundances, observations of meteorites, and data from spacecraft indicate that the metallic cores of the terrestrial planets (and e.g. the Jovian moon Ganymede), must be composed of iron alloyed with nickel and with a lighter element such as silicon. Surprisingly, the physical properties of relevant materials, such as Fe3Si and Ni3Si, are not yet well known at the pressures (P) and temperatures (T) of the cores of the Moon, Mercury, Mars and Ganymede. This proposal addresses this dearth of knowledge by studying the behaviour of Ni3Si at simultaneous high pressure and temperature using the PEARL diffractometer. We shall determine both how the volume responds to P and T (the "equation of state") and the extent to which Ni and Si atoms become disordered at high T. Ni3Si is also of industrial importance as a corrosion-resistant, high-strength alloy.

Principal Investigator: Professor Ian Wood
Experimenter: Professor Lidunka Vocadlo
Experimenter: Mr Andy Jamieson
Local Contact: Dr Craig Bull
Experimenter: Professor David Dobson
Experimenter: Dr Andrew Thomson

DOI: 10.5286/ISIS.E.RB2010224

ISIS Experiment Number: RB2010224

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Ian Wood et al; (2021): The P-V-T Equation of State of Ni3Si, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010224

Data is released under the CC-BY-4.0 license.