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Misfit and Misfit Release in Co-Co3(Al,W) Superalloys
The effect of alloying additions (Ni, Fe, Cr, Ta, Mo, V, Ti, Si) on the misfit of developmental Co-Al-W alloys will be examined using Polaris. The Co3(Al,W) precipitate phase... -
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... -
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... -
In-situ characterisation of mixed steel powders during simulated powder proce...
It is proposed that the lattice parameter change at high temperature is measured for a mix of 316L and SA508 grade 3 steel powders, by means of neutron diffraction in High... -
Non-stoichiometry in (Na1/2Bi1/2)TiO3: from a Pb-free piezoelectric to fast i...
4 days are requested on HRPD to collect Neutron Diffraction (ND) on a carefully designed series of (Na1/2Bi1/2)TiO3-based perovskites (NBT) that exhibit a switch in electrical... -
Structral characterisation of a novel lead free perovskite layer structure an...
Lead free antiferroelectric materials are the focus of much attention for the replacement of lead based materials in electronic devices, such as high energy storage capacitors,... -
In-situ Variable Temperature Studies of Dy Doped BiFeO3
Multiferroics and in particular BiFeO3 have recieved alot of interest. The potential of multiferroic materials to be incorporated into many devices such as sensors and memory... -
Phase transitions in Sr-doped multiferroic bismuth ferrite
Bismuth ferrite, BiFeO3, is a much-studied ceramic showing both dielectric and magnetic ordering at relatively high temperatures. In order to improve its properties there has... -
Variable temperature studies of x = 0.10, 0.25, 0.50 and 0.75, Bi1-xNaxFe1-xN...
Multiferroic materials exhibiting at least two ferroic orders are the subject of extensive research due to many potential technological applications. Bismuth ferrite (BFO) is by... -
In Situ Structural Studies of Low Temperature Synthesised TiP2O7 and V-Doped ...
The AX2O7 series has garnered much recent attention due to its ability to host a wide range of 4+ cations. The members of this series have been shown to exhibit complex... -
Investigating the role of Oxygen in the delafossite-spinel transformations in...
CuFe1-xCrO2 has potential applications as an SOFC cathode material. It exhibits and interesting transformation on oxidation. This is a follow on from our recent HRPD experiment... -
Understanding the "post-perovskite" structure (I): the Behaviour of CaPtO3 at...
Recently, our view of the Earth¿s lower mantle changed dramatically. It had been thought that two major phases were present throughout all of the lower mantle:... -
Investigating the role of oxygen in the mechanism for the transformation from...
Materials for Solid Oxide Fuel Cells (SOFCs) are being developed continuously. Cuprous delafossites (CuBO2 where B=Cu, Cr) are being developed for cathode side applications in... -
Understanding Chemical Expansion in Perovskite Oxides: Impact of Long-Range D...
"Chemical expansion" occurs when some ceramics expand upon releasing oxygen. Their ability to effectively "breathe" oxygen makes them of use in sustainable energy... -
Structural phase transition in SnSe with ultra low thermal conductivity
SnSe has recently been reported to have very good thermoelectric performance. This is linked to an ultralow thermal conductivity and occurs in the B-phase (ZT > 2 above 800... -
Define the crystal structures of lead-free ferroelectric, candidate multiferr...
We have a range of new structures in the lead-free ferroelectric, candidate multiferroic and SOFC cathode areas. The HRPD data will be used to define these new crystal... -
Thermal expansion of Mg: pre-melting effects in hcp metals and the Earth's in...
Ab initio computer simulations have suggested that pre-melting phenomena occur in the elastic properties of hcp-iron at the conditions of the Earths inner core just before... -
Structural evolution and negative thermal expansion of Sr2IrO4
Sr2IrO4 is an important material in condensed matter physics, displaying a novel Jeff=½ Mott insulating state and being a rare comparative system for understanding the high... -
Multi-scale modelling of HCP alloys using peak profile analysis
Hexagonal close packed (HCP) alloys have a wide range of industrial uses, including within thenuclear industry and for aerospace applications.The properties of HCP alloys are... -
Crystal structure of the new oxyapatite-based ALa9(GeO4)6O2 (A = Li-Rb) phosp...
Advanced luminescent materials exhibiting downconversion are important components of next-generation photovoltaic devices aimed at minimizing the spectral mismatch losses in...