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Suppression of thermal conductivity in nanostructured ZnO
Thermoelectricity offers solutions for the low-carbon economy through the development of energy-efficient technology. Modest improvement in thermoelectric performance would... -
Suppression of thermal conductivity in nanostructured ZnO at elevated tempera...
Thermoelectricity offers solutions for the low-carbon economy through the development of energy efficient technology. Modest improvement in thermoelectric performance would... -
Cu-ion mobility and lattice dynamics in the liquid-like phase of Cu2Se
Thermoelectricity enables the conversion of waste heat into useful power, and it is becoming increasingly important for power recovery applications at high temperature, where... -
Phonons and disorder in Yb2Ti2O7
The pyrochlores provide an excellent model system for studying the interaction of framework vibrational modes, defects and magnetism. We propose to investigate these couplings... -
The effect of magnetic structure on ordred/disordered IrMn3 exchange-biasing ...
The exchange biasing effect in the thin film IrMn3/Fe depends strongly on the degree of structural ordering of the underling antiferromagnetic IrMn3 pinning layer. In this work... -
Anomalous magnetism in oxygen-deficient scandium-doped spin ice
Our previous diffuse neutron scattering experiment on SXD showed that oxygen vacancies are the dominant defects in spin ice. The substitution of tetravalent titanium by... -
Phonons and disorder in Yb2Ti2O7
The pyrochlores provide an excellent model system for studying the interaction of framework vibrational modes, defects and magnetism. We propose to investigate these couplings... -
Na-ion diffusion mechanisms in NaxFe1/2Mn1/2O2 cathode materials
NaxFe1/2Mn1/2O2 has been identified as a potential cathode material for Na-ion batteries since it has comparable electrochemical performance to commercially available Li-ion... -
QENS studies of Na-ion battery materials
LixCoO2 is used extensively in portable batteries in laptops and mobile phones, but the scarcity of Li means that alternative materials are required. Structurally related... -
Oxygen-deficient quantum spin ice
In quantum analogues of the spin ice materials quantum mechanical tunneling between ground states is expected, and exotic emergent behaviour has been predicted including a Higgs... -
Intrinsic defect structures in zinc oxide
Zinc oxide is an important semiconductor, but its use in a wide range of applications is limited by the difficulty in doping p-type. This is believed to be related to the nature... -
Magnon-phonon coupling in magnetoelectric HoMnO3
The manipulation of magnetic properties electronically is of great importance in modern computing. Current technology uses electric currents which draws a relatively large... -
Effect of oxygen vacancies on the phonon dispersion of pyrochlores
The frustrated magnetism of pyrochlores makes them candidates for applications in magnetic cooling and scientific instrumentation, and the proposal that they can be used to... -
Anomalous magnetism in oxygen-deficient scandium-doped spin ice
Our previous diffuse neutron scattering experiment on SXD showed that oxygen vacancies are the dominant defects in spin ice. The substitution of tetravalent titanium by... -
Magnetic and charge ordering, superstructures and diffuse scattering in de-in...
Sodium Cobaltate has a complex phase diagram, exhibiting various phenomena and a kaleidoscope of superlattice diffraction patterns as the concentration of sodium is varied. It... -
Suppression of thermal conductivity in nanostructured ZnO
Thermoelectricity offers solutions for the low-carbon economy through the development of energy-efficient technology. Modest improvement in thermoelectric performance would... -
Understanding enhanced thermoelectric properties of sodium cobaltate doped by...
The thermoelectric power factor for (Na1-y¿My¿)0.8CoO2 is dramatically increased when M = Sr, but it is essentally unchanged from the pure compound when M = Ca. Our previous SXD... -
Diffuse scattering from doped zinc oxide
Zinc oxide is an important wide band gap semiconductor material used in a diverse range of industrial applications, many of which require both n-type and p-type components. It... -
Crystal field levels of Na0.77CoO2
The aim of the project is to use McPhase to understand the magnetic order and excitations from Na0.77CoO2. We are able to reproduce the observed magnetic structure and spin-wave... -
The origin of ultra-low thermal conductivity in the thermal barrier material ...
Thermal barrier materials are used in modern turbines to enable them to run above the melting temperature of the turbine blades. However, to go to higher temperatures (and...
