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X-ray diffraction data for graphite to 20 GPa

✍ Scribed by Zhao, You; Spain, Ian

Book ID
111863766
Publisher
The American Physical Society
Year
1989
Tongue
English
Weight
256 KB
Volume
40
Category
Article
ISSN
1098-0121

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✦ Synopsis

X-ray diffraction data have been obtained on polycrystalline graphite at pressures up to 20 GPa.A phase transition is observed at -11 GPa, as evidenced by softening in the interlayer spacing and the observation of new diffraction lines. Below this pressure the variation of the lattice parameters a and c are compared with elastic stiffnesses obtained from ultrasonic measurements. A new value for CΒ» is proposed. The variation c(P) is compared to the recently proposed universal isotherm equation.

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Single-crystal x-ray diffraction of bruc
Single-crystal x-ray diffraction of brucite to 14 GPa
✍ Thomas S. Duffy; Jinfu Shu; Ho-kwang Mao; Russell J. Hemley πŸ“‚ Article πŸ“… 1995 πŸ› Springer-Verlag 🌐 English βš– 448 KB

Single-crystal brucite, Mg(OH)2, was studied to 14 GPa in a quasi-hydrostatic pressure medium using a diamond anvil cell and energy-dispersive synchrotron xray diffraction. The parameters of a third-order Birch-Murnaghan equation of state fit to the data are: KoT---42(2) GPa, and (~K07/0P)T= 5.7(5)