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High-pressure studies of energetic materials
This proposal seeks to identify and characterise high-pressure polymorphs of the energetic materials hydroxylammonium perchlorate, CL-20, diaminodinitroethene (FOX-7), and... -
The high pressure structure of cobalt-bearing silicate glasses
The aim of this proposal is to examine the pressure induced changes in the structure of two cobalt-bearing silicate glasses. Transition metals such as cobalt can adopt different... -
High-pressure and high-temperature studies of N-guanylurea dinitramide (FOX-1...
The aims of this proposal are to explore the high-pressure, high-temperature behaviour of 2 important energetic materials - N-guanylurea dinitramide (FOX-12) and... -
Transformations in B2O3 glass under pressure
B2O3 is a prototypical glass forming oxide material and is an essential component in many industrial glasses. Unlike SiO2 and GeO2 its structure under ambient conditions is not... -
Investigation of new phase, MnBi2, by in situ high-pressure neutron diffraction
Permanent magnets are essential for renewable energy technologies such as electric cars and wind turbines. Global demand for magnets is increasing, however, the elements used to... -
Single-Crystal Neutron Diffraction Study on [U(C5Me5)2(H)(mu¿H)]2
To our knowledge, the length of the U¿H single bond has never been accurately measured, at least not in a molecular compound by single-crystal neutron diffraction. We currently... -
Magnetoelastic Coupling and for Competing Ground States in (Ba1-xAx)Fe2As2 (A...
Unconventional superconductivity has recently been suggested in the new class of iron-based superconductors in which unusual gap symmetries have been observed together with... -
High-pressure studies of inorganic azides
This proposal seeks to identify and structurally characterise the high-pressure phases of the azide salts of sodium, silver, lead, and the ammonium ion. Azides are examples of... -
High-pressure and variable-temperature studies of RDX
Previous studies have suggested that a high-pressure form of the widely used secondary explosive RDX can be obtained above ~4 GPa and 488 K. This phase is reported to be... -
A High pressure investigation of the Manganese Carbonyls Mn(CO)5(CH3) and Mn(...
Organometallic compounds play an important role in catalysis, and compounds with metal carbonyl groups have been studied at elevated pressure by vibrational spectroscopy, but... -
High Pressure studies of BiMO3 perovskites
Bismuth based perovskites have been shown display many interesting properties. The field of A site bismuth perovskites gained renewed vigour due to the recent demonstration of... -
Pressure-temperature phase diagram of of the Jahn-Teller transition in LaMnO3
The parent compound LaMnO3 of the hole-doped colossal magnetoresistance materials La1-xAxMnO3 (A = Ca, Sr, Ba etc.) has attracted much interest from condensed matter scientists.... -
Neutron cross sections and mechanical properties of boron nitrate doped polym...
Hexagonal boron nitride (hBN) is a layered material possessing extraordinary physical properties such as ultrahigh chemical stability, high electronic bandgap (about 6.5 eV),... -
High-pressure studies of energetic materials
This proposal seeks to identify and characterise high-pressure polymorphs of the energetic materials hydroxylammonium perchlorate, CL-20, diaminodinitroethene (FOX-7), and... -
Density-driven structural transformations in calcium silicate glass
The density-driven structural transformations in the calcium silicate glass CaSiO3 will be investigated at pressures increasing to 17.5 GPa. This glass is one of a family of... -
Pressure-Tuning Interactions in Spin-Crossover Metal-Organic Frameworks
The magnetism of spin-crossover (SCO) materials containing Fe(II) can be switched by changing conditions. The low-spin state existing at low temperature or high pressure can be... -
The phase transitions in epsomite (MgSO4.7D2O)
Epsomite is known to undergo a series of phase transitions up to 3 GPa at room temperature, a pressure regime which is of relevance to the interiors of icy planetary bodies,... -
Towards the Calibration of Chemical Pressure
The application of hydrostatic pressure allows the precise tuning of atomic separations, which control electronic structure and virtually all the interatomic interactions that... -
Structural study of high pressure phases of multiferroic BiFeO3
BiFeO3 is a rare example of multiferroic material with a simple perovskite-like structure, having extremely large magnetic ordering temperature (TN = 650 K) and Curie... -
High pressure phase transitions in metal-formate perovskites
The family of guanidinium metal formates has the perovskite structure and, like many perovskites, is of interest for these materials' magnetic and electric properties, in...