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Rosseinsky Programme Access Polaris
To determine the temperature dependence of the structures of new mixed and ionic conducting materials in the n = 2 ruddlesden-popper,mellilite and pyrochlore systems. -
A Total Scattering Study of Local Structure in BIMEVOXes
The BIMEVOXes are an important family of fast oxide ion conducting solids that exhibit very high conductivities at low and intermediate temperatures. A study of local ordering... -
Vacancy Distribution in Praseodymium Doped Ceria
Doped cerias are currently being used as oxide ion conducting electrolyte materials in solid oxide fuel cells (SOFCs). Depending on the nature and concentration of the dopant... -
Na-Dynamics in Solid Ionic Conductors: 11Al2O3-Na2O and Na2Ti3O7
We propose to measure the quasielastic neutron scattering (QENS) spectra to study the diffusion dynamics in beta- alumina (11Al2O3-Na2O) and Na2Ti3O7. The measurement of QENS... -
In search of origin of metal-insulator transition in honeycomb structure Li2RuO3
Recently we have carried out inelastic neutron scattering measurements on Li2RuO3 to understand the nature of the phase transition at 550K. We have seen a clear inelastic... -
Total scattering from multiferroic bismuth ferrite at high temperatures
Bismuth ferrite (BiFeO3) is the archetypal multiferroic material and as such has been copiously studied using a wide variety of techniques. Despite this, new structural and... -
Hydrothermal synthesis and calcination of hydrotalcites
Hydrotalcites are anionic clays which have a variety of applications, including use as environmentally friendly catalysts and catalyst precursors. In this experiment we propose... -
Overcoming Chemical Reaction Equilibrium: Determining the Chemical Potential ...
We have developed and demonstrated a novel process to overcome chemical reaction equilibrium constraints on an important reversible industrial chemical reaction by using... -
Phase behaviour in lanthanum antimony niobate proton conductors
Antimony substituted lanthanum niobium oxide is a recently developed proton conductor with potential use in fuel cells, gas sensors and steam electrolysers Our preliminary work... -
In-situ reaction of lithium amide or imide with manganese(IV) oxide
We request 3 days beam time on POLARIS for in-situ powder diffraction studies of the reactions of lithium amide or lithium imide with manganese(IV) oxide under flowing argon or... -
Formation and ammonia decomposition behaviour of lithium nitride hydride
Ammonia is seen as a key part of the transition to a sustainable energy economy, but needs decomposition catalysts to release its stored hydrogen. Lithium nitride-hydride... -
QENS analysis of industrially relevant small pore zeolites
NOx emissions from the energy and transport sectors represent a major hazard to human health and this has been the focus of significant industrial and academic research. One of... -
Ba3MoNbO8.5 novel oxide ion conductor: Direct observation of oxide ion dynamics
Oxide ion conductors are researched as electrolytes in solid oxide fuel cells. Yttria-stabilized zirconia is the currently used electrolyte in SOFCs, leading to high operating... -
Neutron scattering investigation of Lithium diffusion mechanism in the Li-ion...
The compound LixCoO2 has attracted lots of attention in the recent years because of its application as cathodes in Li-ion batteries. The diffusion pathway of Li- ions within a... -
Towards intermediate temperature diffusion: oxygen dynamics in Ce(Nb,V)O4+d
CeNbO4+d (0 <= d <= 0.33) displays mixed ionic-electronic conductivity at ~800 °C, where it adopts the tetragonal scheelite structure. Prior research has shown that... -
The structure and thermoelastic properties of jadeite, NaAlSi2O6, above room ...
Jadeite, NaAlSi2O6, is a rare, but geologically important clinopyroxene. In the upper part of the transition zone between the upper and lower mantle most pyroxenes are... -
Polyaromatic Hydrocarbons: Understanding liquid structure for benchmarking of...
Asphaltenes are a complex and problematic fraction of crude oil that can precipitate, alter wettability and stabilise unwanted oil-in-water emulsions. Asphaltenes have a high... -
In-situ neutron diffraction studies on proton conducting oxides (CaxLa1-x) ~6...
Rare-earth tungstates have recently attracted significant attention due to its high-temperature proton or mixed proton-electron conductivity. The proton conductivity in La6WO12... -
Magnetic structure determinenation in the antiferroelectric - antiferromagnet...
This proposal seeks to explore a multiferroic material new to science, that of the antiferroelectric ¿ antiferromagnetic ceramic Bi0.8Nd0.2FeO3. This new class of material is of... -
Insights into the structure of mechanochemically-synthesised ternary lithium ...
In the current work, we study inorganic solid-state electrolytes for lithium-ion batteries. These materials, unlike the traditional liquid electrolytes, could lead to a...