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Melting point dynamics of Confined fluids
This proposal aims to investigate the dynamics of the melting transition in H2O and CO2 when confined in a vycor (SiO2) matrix. The field of fluids in confined geometries is... -
Phase Transitions and Orbital Ordering in SrRu1-xCuxO3.
This proposal seeks to establish the importance of orbital ordering on the stability of the tetragonal phase in Cu doped SrRiuO3. Orbital ordering is believed to be a... -
The partial vibrational density of states for As2Se3 glass
The method of Se isotope substitution with inelastic neutron scattering will be used to measure the partial VDOS for As2Se3 glass. This is a prototypical network forming... -
QENS Study of Proton Diffusion in Metal-Organic Framework Materials
The development of new functional metal-organic frameworks (MOFs) as complex proton conductor is receiving increasing attention worldwide. We aim to develop new solid proton... -
Magnetic properties of quadruple perovskites containing A- and B-site iron ca...
New quadruple perovskites with nominal compositions LnFe4Ti3O12 (Ln = La, Nd) have recently been discovered through high pressure synthesis. Mössbauer spectra show that these... -
Local structure of the ferroelectric and giant barocaloric (ND4)2SO4
Ammonium sulfate has a well-known order-disorder phase transition at -50 ºC: initially of interest for the ferroelectric behaviour in the low-temperature phase, this has... -
Study of the Hybridization Gap in the Topological Insulator YbB6
Topological insulators (TIs) are a new quantum state of matter which have bulk insulation but topologically protected metallic surface states. Initially, the TI state was... -
Reorientational dynamics in a low-dimensional glass
Most of the features exhibited by canonical glass-formers can also be found in systems with a high-degree of translational order. In addition to the well-known orientationally... -
Vibrational Dynamics of Alkali Silicate Glasses - An Isotopic Mass Contrast S...
The present proposal is part of a larger EPSRC project advancing the vibrational spectroscopy of silicate glasses. The project involves the techniques of IR and Raman... -
Structural phase diagram of hydrated silks
The formation of silk fibres in both spiders and silkworms is characterized by a conversion of short range ordered structures in solution into long range ordered beta-sheet rich... -
Hydrogen disorder in benzoic acid
In a previous experiment on VESUVIO (RB 1520359) we aimed at investigating para-iodo-benzoic acid (IBA), in particular the onset in temperature for the appearance of the... -
Spin gap opening associated with an extraordinary magnetovolume effect in som...
We have discovered an unusual magnetovolume effect in the 6H-perovskite oxides Ba3BiIr2O9 and Ba3BiRu2O9. These compounds contain isolated face-sharing bi-octahedral dimers... -
Low-dimensional glasses: Effect of occupational site disorder in the excess o...
The present scientific case concerns a glass-forming system with even less degrees of freedom, namely the occupational disorder of high-temperature phase (I, P21/c) of... -
Mechanism of hydrogen residue in metal hydrides formed from high-entropy allo...
High-entropy alloys (HEAs) typically contain four or more principle elements in equimolar amounts. We have recently discovered the first bcc HEA-based hydride with reversible... -
Electron localisation in vanadium hollandites
Hollandites (AxM8O16, where A is a large cation and M is a transition metal, here vanadium) have been studied for a wide range of properties, including electronic phenomena such... -
Magnetostructural study of Percolation Behaviour in Double Perovskites Ba2Fe1...
We propose to use two days of beamtime on POLARIS to determine the structure and magnetic ordering that occurs in a series of cation-ordered perovskites. These cubic compounds... -
Magnetic ordering and crystal electric fields studies in the new cerium compo...
t The compound CeRh2Al10 is a new member of the 1:2:10 stoichiometry series. Previously thethree well-studied compounds CeT2Al10 (T=Fe, Ru, Os) were showed to be the first... -
Spin-orbit transitions in CoV3O8
Strong orbital mixing resulting from local distortions in the crystal field can mix higher energy orbital states with the ground state. We propose to characterise this mixing in... -
Proton diffusion in lithium imide: a quasi-elastic neutron scattering study
Li_2NH has been recently considered for H_2 storage applications. However, its low-T crystal structure is still controversial, with at least 6 options compatible with the... -
Understanding phonon dispersions in new bismuth oxychalcogenide materials
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