115 datasets found

There is widespread interest in perovskite materials, with work traditionally focusing on simple oxide systems. In recent years, however, there has been growing interest in the...

Bismuth(III) containing oxides display numerous interesting properties, such as ionic conductivity, ferroelectricity, nonlinear optical properties, catalytic activity and...

We wish to study the gillespite-structured phase Ba0.5Sr0.5CuSi4O10 at high temperatures to determine the structural basis of the invar-like (zero thermal expansion) of the a-b...

Oxide ion conductors are researched as potential electrolytes in solid oxide fuel cells (SOFCs). Yttria-stabilized zirconia is currently the most commonly used electrolyte in...

Materials that exhibit high oxide ion conductivity are of interest with a view to their application in solid oxide fuel cells, gas sensors and gas separation membranes. A study...

We have recently prepared mesoporous forms of various metals oxides. In some cases the imposition of a mesostructure changes other properties of the material significantly. One...

The migration of cations with a charge greater than 1 has received very little attention historically, perhaps due to no commercially driven demand for the research as well as...

We propose to study the structures of Li2NiGe3O8 and Li2ZnGe3O8 using variable temperature high resolution powder neutron diffraction, with the intention of locating the Li...

The reaction of methanol to form hydrocarbons over zeolite catalysts is an important option for conversion of natural gas or coal to liquid fuels. We have shown previously via...

This proposal seeks neutron diffraction beamtime to study two important systems. We have demonstrated that monofluorophosphate (PO3F) can be substituted into gypsum (CaSO4.2H2O)...

It is a challenge to develop materials for use in fuel cell applications. Presently we are preparing new perovskite and double perovskite structured compounds being potential...

Pseudoelastic, ferromagnetic Co2NiGa type high-temperature shape memory alloys (HT-SMAs) are characterized by a wide range of tunable transformation temperatures and lower...

Solid oxide fuel cells (SOFCs) are devices for converting liquid or gaseous fuels directly to electrical current. They rely on high oxide ion conductivity throughout the device...

The proposed experiment will study how material properties change as a function nitridation (eg. the incorporation of nitrogen gas into the material). In previous study at RAL,...

Motivated by the goal of improving the proton conduction in the brownmillerite Ba2In2O5 we are investigating the role of isovalent substitution at the indium sites. In...

We propose to use Polaris to record powder neutron diffraction data for the oxygen deficient double perovskite Sr3SbO5.5 as a function of temperature to establish the...

We have prepared a new series of layered tellurides Cr2-xInxGe2Te6, containing 2D ordered arrays of (Cr,In) cations and (Ge-Ge) pairs. Recent neutron measurements reveal indium...

Layered oxides are increasingly attractive as electrode materials in energy technology applications, such as fuel cells, electrolysers and permeation membranes. As the...

The stability regime of the oxide ion conductor delta-Bi2O3 is limited to a narrow temperature range just below its melting point. Substitution of Bi3+ by a variety of isovalent...

Unusual total conductivity behaviour at high Ba contents may be attributed to a change in conduction mechanism at high tempertaures, structure change or phase...