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Order and disorder in (Mn,Fe)2(P,Si) magnetocaloric compounds
In the high-performance and low-cost (Mn,Fe)2(P,Si) magnetocaloric compounds, the detrimental hysteresis has been significantly reduced by balancing Mn:Fe and P:Si ratios, which... -
Local structure of the ferroelectric and giant barocaloric (ND4)2SO4
Ammonium sulfate has a well-known order-disorder phase transition at -50 ºC: initially of interest for the ferroelectric behaviour in the low-temperature phase, this has... -
Thermal expansion and ordering in D2O ice III / IX
The high-pressure form of solid water, ice III, is the equilibrium phase in contact with liquid water at pressures from about 2.0 - 3.5 kbar. Consequently, its properties are... -
Structural phase diagram of hydrated silks
The formation of silk fibres in both spiders and silkworms is characterized by a conversion of short range ordered structures in solution into long range ordered beta-sheet rich... -
Spin gap opening associated with an extraordinary magnetovolume effect in som...
We have discovered an unusual magnetovolume effect in the 6H-perovskite oxides Ba3BiIr2O9 and Ba3BiRu2O9. These compounds contain isolated face-sharing bi-octahedral dimers... -
Exploration of the pressure-induced amorphization and glassy states of THF-cl...
Clathrate hydrates (CHs) are ice structures in which water molecules (host) form cages through hydrogen bonds. The cages can accommodate various types of molecules (guests),... -
Low-dimensional glasses: Effect of occupational site disorder in the excess o...
The present scientific case concerns a glass-forming system with even less degrees of freedom, namely the occupational disorder of high-temperature phase (I, P21/c) of... -
Dynamics of Water on Surface of Reverse Osmotic Membranes
We are proposing 10 days of beamtime on IRIS to investigate the diffusion process of H2O molecules adsorbed on polyamide, surface material of reverse osmotic membranes currently... -
Chemical control of structures and magnetic ordering of cobalt oxide chalcoge...
The response of the magnetic ordering of layered cobalt oxide chalcogenides to changes in electron count will be investigated in detail following a preliminary experiment at... -
Local structure / electronic-structure relationships in functional materials
This proposal is a low-cost/high-gain first step in an ambitious project: namely, to develop a combined neutron scattering and electronic structure calculation approach as a... -
Water diffusion mechanism in hydrated amorphous calcium carbonate
Calcium carbonates are highly important in geochemistry and especially in biomineralization. In nature, organisms can form each of the anhydrous polymorphs selectively for... -
High-pressure, high-temperature studies of energetic materials - RDX and HMX
One of the aims of this proposal is to quench to ambient pressure a metastable form of the widely used secondary explosive RDX. This is formed above ~4.5 GPa and 448 K but is... -
QENS on Halide Stabilized LiBH4
LiBH4, is an ionic solid, consisting of Li+ and BH4- ions. It undergoes a structural phase transition at 383K. Within the HT phase, the BH4-units undergo rapid re-orientations,... -
Thermal fluctuations of cold shock proteins from different flavours of extrem...
Extremophiles are organisms which survive and thrive in extreme environments. The proteins from extremophilic organisms have received considerable attention as they are... -
Dynamics of a New and High Performance Proton Conductor ZnADP.3H2O
We propose to measure the dynamics in ZnADP¿3H2O, a new and high performance material that exhibits proton conductivity as high as Nafion membranes, which is the best commercial... -
Water dynamics in dental zinc cement by quasi-elastic neutron scattering
Zinc phosphate cements (ZPCs) are used in dentistry. Cement formulation (liquid+solid) is largely empirical because of lack of information on the exact chemical nature of the... -
Neutron scattering investigation of the influence of high hydrostatic pressur...
Amyloid fibrils are highly organized filamentous structures formed by the self-assembly of polypeptides. This proposal is to study the effect of pressure on the structure of... -
QENS on Lightweight Borohydrides
We propose to study two aspects of the hydrogen dynamics in complex hydrides:First: The structural transitions in borohydrides are believed to be connected with an increase in... -
Programme access Nelmes
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Disordered ice II a possible new ice phase
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