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Stochastic Cation Dynamics in Photovoltaic Hybrid Perovskites under Pressure
Methylammonium lead iodide (MAPI) is one the most promising materials for photovoltaics. Notwithstanding the above, access to its phase diagram and the underlying structural... -
Comparison of Dynamical Behaviour in MAPbX3 and FAPbX3: How Do They Differ ?
Organic-inorganic lead halide perovskite compounds are shown to be very promising candidates for low cost, solution-processable, highly efficient (>22%) solar cells with a... -
Investigating the magnetic structure of the solid solution PrCr(1-x)MnxO3
Rare-earth (A= La, Ce, Nd, Pr) orthochromites (A CrO3) and orthomanganites (A MnO3) are of interest due to the number of unusual physical properties they possess, displaying... -
Determining the interaction between water and carbon dioxide in smectite clay...
Interactions between CO2 and clay have attracted interest in the scientific community recently. This is partly motivated by the presence of large amounts of clays in caprock... -
Pressure effect on stable and metastable structural phases in geometrically f...
Geometrically frustrated antiferromagnet LuBaCo4O7 exhibits unusual competition between two low-temperature phases with orthorhombic and monoclinic symmetry. Depending on... -
Phase Diagram of Ba1-xKxFe2As2
In the new class of iron pnictide superconductors, there is evidence of phase coexistence close to the phase boundary between the SDW and superconducting order produced by hole... -
Some Ferroic Perovskite Solid Solutions
We are examining various perovskite solid solutions based on NaNbO3 or BiFeO3 that havepromising ferroelectric or multiferroic properties. All of these solid solutions show... -
Structure Direction from Electrons in the Presence of the 'Alkalide Option': ...
We request 5 days on SANDALS to investigate the structural effect of expanded metals in the LiNa-MeNH2 system at three different concentrations. The interplay between... -
Hydrogen bonding in monoclinic jarosites
Jarosite minerals are of great importance to a range of mineral processing and research applications, as well as significant to the understanding of the environmental history of... -
Incommensurate magnetic fluctuation in KFe2As2
The debate whether interband or intraband scattering is crucial for Fe-based superconductors is not settled down yet. Investigation a system with completely missing electron... -
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... -
Transport properties of sodium ions in novel electrochemical storage systems
The electrochemical energy storage and conversion devices are the key components in future?s smart energy grids enabling on-demand and efficient energy usage. To date, flow,... -
Structural Investigations of Mixed-anion Argyrodites
Argyrodites exhibit promising thermoelectric (TE) properties but a structural transition causes cracking of ingots on cooling to ambient temperature, introducing problems for... -
A comparative IFWS study of dynamics in the photosynthetic antenna complex LH...
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Phonon measurements of the incommensurate phase transition in Åkermanite
The proposal is to measure the inelastic scattering from a single crystal of Åkermanite on cooling towards and through the incommensurate phase transition at 358 K. There are... -
Compression of meridianiite (MgSO4.11D2O) single crystals to 5 kbar
We propose to carry out single crystal diffraction measurements of the most hydrated MgSO4 compounds, meridianiite, using a thin-walled TiZr gas cell on SXD up to 5 kbar. These... -
Polymorphism of phenytoin at low temperature
Phenytoin is a simple organic pharmaceutical material that exhibits a phase transition at low temperature to a new phase. The high temperature form exhibits some unusual... -
ZIF-8 cooling
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In-situ High Temperature Studies of BiFeO3 in a Stabilising Oxygen Atmosphere
The drive to find novel materials for applications such as data storage has led to a resurgence in research into multiferroic materials. Bismuth ferrite is the most widely... -
Crystal and Magnetic Structures of Ba2BTeO6 (B=Cu, Ni, Zn)
Ba2CuTeO6 and Ba2NiTeO6 are compounds with structures related to that of the proposed spin liquid Ba3CuSb2O9. The space group and nature of the B-site ordering in Ba3CuSb2O9...