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The ferroelectric phase transition in Dion-Jacobson layered perovskites - con...
Ferroelectricity in the Dion-Jacobson (DJ) family of layered perovskites arises from a 'trilinear coupling', whereby two non-polar lattice modes interact in such a way to... -
Improper ferroelectricity in hexagonal tungsten bronzes
We address the detailed atomistic mechanism of ferroelectricity in a new family of oxides typified by the composition CsNbW2O9. Contrary to the mechanism in most ferroelectrics,... -
Ammonia synthesis using lithium hydride-metal nitride composites: an in situ ...
The development of more active catalysts for the production of ammonia will have a worldwide impact on the energy cost of producing fertiliser. Composites of lithium hydride and... -
Pressure effect on high-temperature multiferroic CuO studied by a single crys...
We propose to perform neutron diffraction experiment under high pressure condition, using a single crystal of CuO on WISH beamline. This monoxide is known as a multiferroic... -
Relaxor-like dielectric behaviour in stoichiometric Sillenite Bi12SiO20
We request 1 day of beam-time on POLARIS to collect Neutron Diffraction (ND) data on the Sillenite Bi12SiO20 (gamma-Bi2O3) that we have recently discovered to exhibit a... -
The possibility of strongly ferromagnetic austenite in a stainless steel
It is generally accepted that austenitic steels (fcc) show no ferromagnetic signature. However, thermomagnetic measurements suggest an unexpected ferromagnetic transition (Tc =... -
Hydrogen production from ammonia using lithium imide: an isotope study
We have recently discovered that light metal amides and imides are excellent cattalysts for the decomposition of ammonia. We request 3 days on POLARIS to perform in situ neutron... -
Determining the Induced Magnetism in Graphene by Polarised Neutron Reflectivity
This proposal aims to unambiguously understand the proximity effect between graphene and a transition metal using Polarised Neutron Reflectivity (PNR) measurements at the POLREF... -
Understanding the decomposition of ammonia by lithium-calcium imide
Among light metal amide-imide catalysts for ammonia decomposition, lithium-calcium imide is the most promising candidate for practical application. Ex situ diffraction data... -
The crystal structure and thermal expansion of orthorhombic NiSi
NiSi is a technologically important material that is also of interest to Earth Scientists because of the possible role of Ni and Si in the Earth¿s core. It crystallises in the... -
Texture memory and variant selection for steel and titanium and zirconium alloys
The proposed experiment will focus on determining the level of texture memory and variant selection on both heating and cooling for steel and titanium and zirconium alloys with... -
Structural phase transitions in Li doped AgNbO3.
The aims of the present proposal are twofold. Firstly to use very high resolution neutron diffraction data to establish accurate and precise structures of the novel... -
A variable temperature study of polymorphism in Li2MSiO4 electrode materials
There is great interest in scaling up Li-ion batteries for use in electric vehicles, requiring cheap and safe cathodes. Recently, silicate-based cathodes have been described,... -
Test of a new thermal neutron GEM detector based on a 3D cathode
This dataset has no description
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Metastable phase formation and memory effects in barium borate glasses.
BaB4O7 glass crystallises to different polymorphs of the same composition depending on the prior thermal history of the glass and the surface area of the sample. This indicates... -
Possible amorphous:amorphous phase separation in bioactive glass containing s...
There is an interest in understanding the nature of fluoro-alumino-silicate glasses based upon the apatite stoichiometric composition and of potential within ionomer cements for... -
Phase behaviour and dielectric phenomena in bismuth niobate energy storage ma...
Bismuth niobate (BiNbO4) is widely used in multilayer RF and microwave components such as capacitors and chip layer capacitors. This compound exhibits two main structural forms... -
A high-temperature neutron powder determination of the phase transition and c...
Cu2ZnSnS4 (CZTS) is a solar cell material of great interest. However the material when fabricated, although of high symmetry, contains substantial defect concentration and a...
