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High-Pressure Structural Behaviour of 2,2,2-trifluoro-ethanol
In the mono-alcohols (ROH) there is a competition between the packing requirements of the R-group and for the hydroxyl groups to be sufficiently close for hydrogen bonding to... -
In situ hydration study of the novel ionic conductor Ba7MoNb4O20
Oxide-ion and proton-conducting materials attract considerable interest thanks to their application as electrolytes in solid-oxide fuel cells (SOFCs). We have recently... -
Determination of the structure of SiO2-rich aqueous fluids at high temperatur...
Many geological processes are governed by the migration of hot, mineral-rich water. These "hydrothermal" fluids are stable at high pressures and temperatures and are important... -
Excitations, BEC, and partially ordered states of liquid 4He in disorder
We propose measurements of the elementary phonon-roton (p-r) excitations of liquid 4He confined in porous MCM-41 (45 Å pore diameter) at wave vectors Q ¿ beyond the roton¿, 2.4... -
Investigating the formation of novel mixed amide-imide complexes and understa...
Inexpensive light-metal amides are among the most highly active and effective ammonia decomposition catalysts at modest temperatures and are likely to surpass the performance of... -
Dynamics of Solid Ionic Conductors: Na2Si2O5 and Li2Si2O5
We would measure vibrational spectra for Li2Si2O5 and Na2Si2O5, as well as quasielastic neutron scattering (QENS) spectra for Na2SiO5. The measurement of phonon spectra in the... -
Pressure dependence on the isomorphic phase transition in KOs2O6
We are requesting 5 days of beamtime on HRPD to measure powder diffraction patterns of KOs2O6 under He gas high pressure up to 150 MPa. KOs2O6 exhibits a novel phase transition... -
Magnetic structure and spin excitations in the magnetic Weyl heavy fermion co...
CeBi2 is a new magnetic Weyl heavy fermion compound which demonstrates the Kondo-type behaviour. It undergoes a transition to a complex antiferromagnetic ground state, and on... -
In-situ study of magnetic structure for Ho2(Fe,M)17 (M =Si, Ni and Al) alloys
Metallic materials that exhibit negligible thermal expansion or zero thermal expansion (ZTE) have great merit in practical applications. However these materials are very rare... -
Structural determination of non-stoichiomentric phases Li2+yND for 0<y<1
In a series of in situ neutron diffraction measurements from deuterium up-take in Li3N, the present authors have identified a novel non-stoichiometric 'quasi-imide' of... -
Structure of multi-component mixed metal molybdates by neutron diffraction
Our general aim is to understand the defect structure of complex oxides in ternary oxide systems, which are known to be effective selective oxidation catalysts. For this purpose... -
Magnon dispersion in the polar ferrimagnet BaCaFe4O7
Polar or non-centrosymmetric ferri(-o)magnets offer a plethora of potential technological devices;the inherent magnetoelectric effect can underpin both pyroelectric or... -
Structure of Colloidal Crystals Near a Solid Surface
The structure of colloidal crystals (dispersions of particles that spontaneously order in a regular array) is known to be influenced by solid boundaries. However there are few... -
In-situ studies of alkaline earth nitride deuterides
Heavy alkaline earth nitride hydrides (AE2NH, with AE = Ca and Ba) are of interest due to their potential suitability as electrolyte materials in a variety of electrochemical... -
Crystal field excitations on a new triangular-lattice antiferromagnet
The magnetic properties and ground state of a new triangular-lattice antiferromagnetic candidate NdMgAl11O19 were studied by magnetization measurements and neutron scattering... -
Structural distortions in Bi2SiO5
This dataset has no description
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High precision measurement of the spin waves in Yttrium Iron Garnet
Yttrium Iron Garnet (YIG) is a material with extremely wide ranging applications. It is a ferrimagnetic spinel with the narrowest ferromagnetic resonance linewidth of any known... -
Phase Transitons and Phonon-Liquid-Electron Crystal Behaviour in Argyrodites
We wish to collect powder neutron diffraction as a function of temperature on four samples of argyrodites, A8GeQ6 (A = Cu, Ag; Q = S, Se), to investigate structural phase... -
Decomposition studies of Li(1-x)NaxND2, LiNa2(ND2)3 and Li3Na(ND2)4
We ask for 3 days on GEM to study in-situ the decomposition of the Na-substituted LiNH2 phases, Li1-xNaxND2, LiNa2(ND2)3, Li3Na(ND2)4 and their reactions with LiD. LiNH2 is the... -
Cavitation processes in gas desorption experiments.
The aim of the experiment is to improve understanding of the onset of the cavitation process in desorption, in order to, ultimately, better understand adsorbate behaviour and...
