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Compressibility and Tilting of Polyhedra within Sr2NiMoO6 at High Pressure
Ordered double perovskites (also known as elpasolites) have the general formula A2BBO6 where A is generally a rare earth metal or alkaline earth metal and where B and B are... -
Local ordering in the pressure-induced order-disorder transition in ammonium ...
Ammonium bromide undergoes a pressure-induced order-disorder transition, where the disordered (plastic) phase is thought to consist of a random distribution of ammonium cations... -
The quest for fully hydrogen-ordered ice XIV
Water ice displays a remarkably complex phase diagram containing pairs of hydrogen-ordered / disordered phases. Ice XII is a hydrogen-disordered phase and ice XIV is its... -
Pressure driven phase transitions in antiferroelectric, PbZrO3
Antiferroelectric materials are attracting extensive attention due to their potential in energy storage applications. These materials exhibit a double polarisation-field... -
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The phase stability of alpha-glycine at high pressure
Though the beta and gamma forms of the simplest amino acid, glycine, yield a variety of different phases on application of pressure, Raman data suggest that the most common... -
Insulator to metal transition in TiOCl at high pressures
We propose to study the high temperature structure of TiOCl where a pressure induced metal to insulator transition has been reported recently by Kuntscher et al.Due to our... -
High-pressure structure of ferrosilite FeSiO3 glass
The density-driven structural transformations in ferrosilite glass FeSiO3 will be investigated at pressures increasing to 17.5 GPa. This glass is one of a family of silicate... -
The high pressure structures of ammonium fluoride
Ammonium fluoride is an ionic H-bonded analogue of ice. Its behaviour is thus of interest as a comparator for ice. This proposal is for beamtime to make the first neutron study... -
Towards Neutron Scattering of Amorphous Materials in the Gigapascal Regime
Over the past few years, extensive developments have been made in the use of neutron diffraction for structural studies of liquids and amorphous materials at high pressure.... -
Comparison of the Compression Behaviour of BaSnO3 and Ba0.575Sr0.425SnO3
We propose to study the effect of pressure on the structure of the tetragonal Ba0.575Sr0.425SnO3, The behaviour will be compared to the compression of the cubic BaSnO3 (parent... -
High pressure structural study of BaD2
Simple hydrides are of scientific interest due to their suitability for storage of hydrogen in the solid state. These materials also display a wealth of interesting physics,... -
Low temperature, high pressure phase transition of the Improper Ferroelectric...
We have found that the 134-perovskite, HgMn7O12 (HgAMnA3MnB4O12) exhibits improper ferroelectric coupling due to an unusual orbital ordering of the manganese cations on both... -
Understanding the Pressure Response in Amines: Weak hydrogen-bonding vs Non-b...
Methylamines are an ideal chemical system to study in order to understand the effects of steric bulk and competing non-bonding interactions on hydrogen bonding at the networks... -
H-bonding pattern in high-pressure polymorphs of carbohydrates
Carbohydrates are compounds most vital for all living organisms. Thanks to their multiple hydroxyl groups they can create numerous short-range interactions. Therefore they are... -
A High-Pressure investigation on 3,4,5-Trinitropyrazole
This proposal will explore the effect of elevated pressure on the 3,4,5-Trinitropyrazole (TNP). TNP releases a large amount of dinitrogen gas as a detonation product which is... -
Exploring the High-Pressure Phase Diagram of the Spin Liquid Candidate TbInO3
Spin liquids are an exotic state of matter that hold relevance to future quantum technologies, suchas quantum computing. Recently, there has been a flurry of activity in the... -
Towards Neutron Scattering of Amorphous Materials in the Gigapascal Regime
Over the past few years, extensive developments have been made in the use of neutron diffraction for structural studies of liquids and amorphous materials at high pressure.... -
FePS3 magnetic and crystal structure under pressure
We have metallised the two-dimensional honeycomb anti-ferromagnet FePS3 at 5.5 GPa. The mechanisms for metallisation, as well as the physical properties of the metallic state,... -
High Pressure Driven Spin States in LaCoO3
This proposal is concerned with determining variations in the high pressure structure of LaCoO3 and observing changes within this as the material undergoes some well...
