Thermoelastic behaviour of hexagonal graphite-like boron nitride

Godec, Yann Le; Martínez‐García, D.; Mézouar, M.; Syfosse, G.; Itié, Jean‐Paul; Besson, Jean

doi:10.1080/08957950008200304

Cited by 55 publications

(37 citation statements)

References 13 publications

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“…The pressure of the sample is calculated from the equation of state of BN. 11 Figure 1 exemplifies XRD patterns recorded at 2 GPa and various temperatures. A broad amorphous peak, located at 2 Ϸ4.8°, together with Bragg peaks from BN marked in Fig.…”

mentioning

confidence: 99%

Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy

Zhuang

Jiang

Zhang

et al. 2001

Applied Physics Letters

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confidence: 99%

Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy

Zhuang

Jiang

Zhang

et al. 2001

Applied Physics Letters

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“…As a matter of fact, we have used MgO to calibrate pressure in other high pressure-high temperature X-ray diffraction experiments [18,19].…”

Section: Resultsmentioning

confidence: 99%

Equations of state of MgO at high pressure and temperature

Martíinez-García

Godec

Mézouar

et al. 2000

High Pressure Research

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A synchrotron X-ray diffraction study on MgO has been done at simultaneous high pressure and temperature. The lattice parameter of MgO has been measured up to a static pressure of 6 GPa and a temperature of 1273 K, using a large volume pressure cell and energy-dispersive synchrotron X-ray powder diffraction. The compression was made following six high-temperature isotherms. A Vinet equation of state was used to fit the experimental P-V-T data. The Vinet's model compares very well with the experimental data above the Debye temperature (760K) and allows the use of MgO as an alternative internal pressure calibrant for experiments at high temperature.

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“…These peaks were fitted again using the GSAS Rietveld refinement program, and the pressure extracted using the published equation of state of boron nitride. 17 Errors on the reported pressure due to calibration uncertainties were taken to be the larger of either 0.1 GPa or 10% of the absolute pressure.…”

Section: Experimental Methodsmentioning

confidence: 99%

High-pressure forms of lithium sulphate: Structural determination and computer simulation

et al. 2005

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Powder x-ray diffraction has been performed on lithium sulphate, Li 2 SO 4 , in the temperature range 300 to 1000 K and at pressures up to 7.5 GPa. The ambient pressure ␤ phase appears stable up to 3 GPa, whereupon a slow transformation begins into a new phase, ␦-Li 2 SO 4 . This phase is characterized by broad, very low intensity Bragg peaks. Above 7 GPa and with slight heating, another phase, ⑀-Li 2 SO 4 , is formed which shows sharp Bragg peaks. Rietveld refinement of the structure of the ⑀ phase has shown it to be isostructural to the high-temperature phase III of Na 2 SO 4 . Molecular dynamics simulations of the ⑀ phase using an established potential indicate disordering of the lithium ions and rotations of the sulphate groups at high temperature, but not at a level approaching the extreme disordering shown in the superionic ␣ form of Li 2 SO 4 .

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Thermoelastic behaviour of hexagonal graphite-like boron nitride

Cited by 55 publications

References 13 publications

Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy

Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy

Equations of state of MgO at high pressure and temperature

High-pressure forms of lithium sulphate: Structural determination and computer simulation

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