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Persistent URL http://purl.org/net/epubs/work/36665
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Record Id 36665
Title Thermoelastic behavior of graphite from in situ high-pressure high-temperature neutron
Abstract We have studied the pressure-volume-temperature relationship of graphite up to pressures of 6 GPa and temperatures up to 1250 K. Neutron powder diffractograms were collected on the PEARL/HiPr diffractometer at ISIS/Rutherford Appleton Laboratory, UK. The heatable Paris-Edinburgh cell was employed. Temperature was measured by neutron resonance absorption spectroscopy. The pressure was obtained from an internal MgO standard. The Rietveld-refined data were fitted with several equation of states. The best fit is obtained with B=38 GPa, B'=dB/dP=9 and a temperature derivative dB/dT=−0.002 GPa K−1. These values are compared to data obtained earlier from diffraction measurements and ultrasound spectroscopy.
Organisation CCLRC , ISIS , ISIS-PEARL
Keywords Physics , Materials , ISIS 2007
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Language English (EN)
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Journal Article Phys Rev B 73 (2006): 214115. doi:10.1103/PhysRevB.73.214115 2006