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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 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... -
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... -
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... -
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... -
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... -
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... -
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... -
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... -
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... -
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... -
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... -
Variable Temperature Neutron Diffraction Studies of Thermal Battery Cathode M...
Thermal batteries find use in applications such as emergency power systems and ejector seats in aircraft. As a result, systems need to be highly reliable. This requires a... -
Temperature induced structural phase transitions in BaPrO3 and acceptor doped...
The sequence of structural phase transitions that occur in distorted ABO3 perovskites as a function of temperature is of intrinsic interest for better understanding of the... -
Characterization of the fast lithium ion conducting phases Li(BH4)1-xBrx
Two days of beamtime on GEM will be used to analyse the structure of the fast lithium-ion conductive phases formed by anion doping the hydrogen storage material LiBH4 with... -
Continued studies of materials in the BiFeO3-KNbO3 solid solution
In recent years there has been a resurgence in research dedicated to ferroelectric materials primarily due to the combination of the requirement for Pb-free replacements for... -
Chasing the symmetry of the BiFeO3 γ-phase in the isostructural A- and B...
BiFeO3 is by far the most widely studied multiferroic material and yet many mysteries remain in the phase diagram. One mystery is the crystal structure of the high T gamma... -
E0F0 SLM built steel cube (heart cube, close to substrate)
This dataset has no description
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Environmental Apatites
Materials adopting the apatite structure are gaining an increasing importance as potential solid-oxide fuel cell electrolytes and for the chemical stabilisation of high level... -
Crystal field excitations in SrTb2O4
SrTb2O4 belongs to the family of rare-earth RE strontium oxides, SrRE2O4. These compounds, consisting of hexagons and triangles, are affected by geometrical frustration and...
