School of Science, Engineering & Environment

Crossover between liquid-like and gas-like behaviour in CH4 at 400 K (2017)
Journal Article
Smith, D., Hakeem, M., Parisiades, P., Maynard-Casely, H., Foster, D., Eden, D., …Proctor, J. (2017). Crossover between liquid-like and gas-like behaviour in CH4 at 400 K. Physical Review E, 96(5), 052113. https://doi.org/10.1103/PhysRevE.96.052113

We report experimental evidence for a crossover between a liquid-like state and a gas-like state in fluid methane (CH4). This crossover is observed in all of our experiments, up to 397 K temperature; 2.1 times the critical temperature of methane. The... Read More about Crossover between liquid-like and gas-like behaviour in CH4 at 400 K.

On the high-pressure phase stability and elastic properties of β-titanium alloys (2017)
Journal Article
and elastic properties of β-titanium alloys. Journal of Physics: Condensed Matter, 29(15), 155401-155401. https://doi.org/10.1088/1361-648X/aa60b6

We have studied the compressibility and stability of different β-titanium alloys at high pressure, including binary Ti–Mo, Ti–24Nb–4Zr–8Sn (Ti2448) and Ti–36Nb–2Ta–0.3O (gum metal). We observed stability of the β phase in these alloys to 40GPa, well... Read More about On the high-pressure phase stability and elastic properties of β-titanium alloys.

n-Diamond : Dynamical stability of proposed structures (2013)
Journal Article
Baldissin, G., & Bull, D. (2013). n-Diamond : Dynamical stability of proposed structures. Diamond and Related Materials, 34, 60-64. https://doi.org/10.1016/j.diamond.2013.01.010

A number of experimental works, mainly under extreme conditions, report a carbon phase with the same reflections as diamond but showing additional reflections that are forbidden for diamond. The crystal structure of this phase, called n-diamond by Hi... Read More about n-Diamond : Dynamical stability of proposed structures.

Synthesis of pure lithium amide nanoparticles (2013)
Journal Article
Baldissin, G., Boag, N., Tang, C., & Bull, D. (2013). Synthesis of pure lithium amide nanoparticles. European Journal of Inorganic Chemistry, 1993-1996. https://doi.org/10.1002/ejic.201201535

Deprotonation of ammonia with n-butyllithium offers a facile synthetic route to produce pure lithium amide exhibiting fine granularity, which facilitates the complete thermal decomposition to lithium imide at a relatively low temperature of 600 K. Sy... Read More about Synthesis of pure lithium amide nanoparticles.

Low frequency sound propagation in activated carbon (2012)
Journal Article
Bechwati, F., Avis, M., Bull, D., Cox, T., Hargreaves, J., Moser, D., …Venegas, R. (2012). Low frequency sound propagation in activated carbon. https://doi.org/10.1121/1.4725761

Activated carbon can adsorb and desorb gas molecules onto and off its surface. Research has examined whether this sorption affects low frequency sound waves, with pressures typical of audible sound, interacting with granular activated carbon. Imped... Read More about Low frequency sound propagation in activated carbon.

The pressure–temperature phase diagram of MgH2 and isotopic substitution (2011)
Journal Article
Moser, D., Baldissin, G., Bull, D., Riley, D., Morrison, I., Ross, D., …Noreus, D. (2011). The pressure–temperature phase diagram of MgH2 and isotopic substitution. Journal of Physics: Condensed Matter, 23(30), 305403. https://doi.org/10.1088/0953-8984/23/30/305403

Computational thermodynamics using density functional theory ab initio codes is a powerful tool for calculating phase diagrams. The method is usually applied at the standard pressure of p = 1 bar and where the Gibbs energy is assumed to be equal to t... Read More about The pressure–temperature phase diagram of MgH2 and isotopic substitution.

In-situ powder neutron diffraction study of non-stoichiometric phase formation during the hydrogenation of Li3N (2011)
Journal Article
Bull, D., Sorbic, N., Moser, D., Telling, M., Smith, R., Gregory, D., & Ross, D. (2011). In-situ powder neutron diffraction study of non-stoichiometric phase formation during the hydrogenation of Li3N. Faraday Discussions, 151, https://doi.org/10.1039/c0fd00020e

The hydrogenation of Li3N at low chemical potential has been studied in situ by time-of-flight powder neutron diffraction and the formation of a nonstoichiometric Li4_2xNH phase and Li4NH observed. The results are interpreted in terms of a model for... Read More about In-situ powder neutron diffraction study of non-stoichiometric phase formation during the hydrogenation of Li3N.

An in situ neutron diffraction measurement of the pressure-temperature evolution of a MgD2:TiD2 mixture (2010)
Journal Article
Moser, D., Bull, D., Cowpe, J., Roach, D., Ross, D., Noreus, D., & Tucker, M. (2010). An in situ neutron diffraction measurement of the pressure-temperature evolution of a MgD2:TiD2 mixture. High Pressure Research, 30(4), 643-652. https://doi.org/10.1080/08957959.2010.533664

The hydrogen storage capacity of Mg–Ti–H films is approximately five times that of conventional metal hydride electrodes in NiMH-batteries. Mg and Ti are considered to be immiscible in the bulk and the ambient pressure phase diagram of Mg and Ti in... Read More about An in situ neutron diffraction measurement of the pressure-temperature evolution of a MgD2:TiD2 mixture.

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