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Cation vacancy ordering in calcium bismuth molybdate scheelite type phases
Cation-vacancy sheelite-type phases in the Ca1-3xBi2x[]xMoO4 system (where [] represents a cation vacancy) are being investigated for applications in wireless communication... -
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... -
Phonon-Liquid-Electron Crystal Behaviour in Cu8GeSe6
Thermoelectric devices enable the conversion of thermal energy into electrical power. The development of new materials is essential to enable large scale implementation of... -
High temperature neutron powder diffraction studies of polymorphism in Li3+xV...
Novel oxide ceramics with high values of lithium-ion conductivity at ambient temperatures are required as an essential part of the development of new lithium battery... -
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... -
Local order in the bismuth based solid solution systems BiMeO3 - ATiO3 (Me = ...
Research within the field of functional oxides has always been very active. In recent years systems showing a coupling between ferroelectricity and magnetism have become one of... -
Local structure changes at the pyrochlore-fluorite phase boundary in the mode...
Electrolytes based on pyrochlores such as Ln2M2O7 (M = Ti, Zr, Hf) have attracted attention due to their relative stability combined with high ionic conductivity at intermediate... -
In-situ Thermoelectric Measurements of Copper Iron Sulphides
Thermoelectric devices are capable of converting thermal energy directly into electrical energy. Large-scale applications of the technology requires materials that are composed... -
Increasing the stability range of substituted delta-Bi2O3 oxide ion conductor...
It has been demonstrated that stabilised bismuth oxides can be successfully incorporated into intermediate temperature solid oxide fuel cells. These stabilised bismuth... -
Structure/Conductivity Relationship in Doped Bismuth Tantalate Solid Electrol...
A detailed study of the temperature and compositional variation of defect structure in doped bismuth tantalates is proposed. Tantalum doping into Bi2O3 can achieve d-phase... -
Structural study of oxygen ion conduction in microporous Mayenite
The crystal unit cell of mayenite, 12CaO.7Al2O3, consists of a cubic lattice of [Ca24Al28O64]4+ with the remaining 2*O2- contained in cages, which are linked by channels within... -
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... -
Structural Investigations of Mixed-anion Argyrodites
Argyrodites exhibit promising thermoelectric (TE) properties but a structural transition causes cracking of ingots on cooling to ambient temperature, introducing problems for... -
Lithium ion distribution in lithium aluminium phosphate and lithium germanium...
There has been a renewal of interest in lithium ion conducting solid electrolytes for use in lithium batteries. The ease of handling and scale-up, make oxide based systems, most... -
Total Scattering Study of Hexagonal and Rhombohedral Bi2O3 Based Electrolytes
Bismuth oxide based electrolytes have been widely studied due to their high oxide ion conductivity. The d-phase of Bi2O3 shows the highest known oxide-ion conductivity of any... -
A pair distribution function study of thermoelectric bornites
Thermoelectric materials are attracting increasing attention due to their potential for waste heat energy recovery. The challenge in finding better thermoelectric materials lies... -
In-situ study of oxygen storage materials in the Zr-Ce-O system
Zirconia-ceria ceramics are promising materials within automotive exhaust catalysts, exploiting the Ce3+<->Ce4+ redox reactions to store oxygen. For a Zr:Ce ratio of 1:1... -
Study of cation disorder, oxygen vacancy ordering and proton sites in La2-xNd...
On the basis of X-ray diffraction the oxygen deficient La2-xNdxCe2O7 series displays a transition from disordered fluorite to the C-type superstructure in which the cations... -
Oxide ion vacancy distribution in A site substituted defect pyrochlores.
Electrolytes based on pyrochlores such as Ln2M2O7 (M = Ti, Zr, Hf) have attracted attention due to their relative stability combined with relatively high ionic conductivity at...
