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Negative thermal expansion in the rutile phase of ZnF2
It has recently been discovered than the rutile phase of zinc fluoride shows negative thermal expansion along all three crystallographic axes. What is highly unusual about this... -
Proton dynamics in novel organic ferroelectric materials
The vast majority of known ferroelectrics are inorganic compounds such as barium titanate and potassium dihydrogen phosphate. Contrary to naïve expectation, ferroelectricity in... -
Quasi-elastic neutron study of the organic cation dynamics in the halide pero...
Solar cells based on a layer of halide perovskite have recently seen rapid increases in efficiency, with certified values in excess of 20%. The prototypical material of this... -
Magnetic order in the quantum critical phase of Sr3Ru2O7
Many novel electronic ground states form in close proximity to quantum critical points (QCPs), that is, the point where a continuous phase transition occurs at zero temperature.... -
High Resolution Powder Diffraction of Manganites to Determine Bond Lengths as...
Manganites show promise as magnetocaloric materials - for use in solid-state refrigeration - in terms of cost, durability and tunable thermal conductivity. By tuning the... -
Probing the temperature dependence of magnetism in Ba0.67K0.33Fe2As2
We propose to study the temperature evolution of magnetic excitations in optimal doped Ba0.67K0.33Fe2As2, this work will complement our earlier work on the samples at base... -
Multiferroic (Ferroelastic/Magnetic) Phase Transitions in KMnF3
KMnF3 perovskite undergoes 3 structural, and two magnetic phase transitions on cooling from 300 K to 2 K. Above 185 K the compound is in the aristotype structure, on cooling... -
Aza-crown-stabilized Alkali-Alkalide Systems: Solvent and metal effects on di...
We request 4 days on IRIS to investigate the diffusional and rotational dynamics of the alkalide forming, fully methylated aza-crown hexamethyl-hexacyclen (HMHC) in... -
The structural phase transitions of Ammonia Borane, an invetigation of the dy...
Ammonia Borane (AB), NH3BH3, was first synthesised in the 1950s and has now become the focus of a world wide research program with regards to its potential as a hydrogen store.... -
The Dynamics of Paraquat in Aqueous Solution and Hydrated Clay
This proposal will enable us to study the dynamics of an important water soluble pesticide molecule, paraquat, in solution and in the interlayer region of swelling... -
Correlation of structural parameters with electrocaloric performance in (Ba,S...
Kay objectives: measurements of Ti-O bond lengths and Ti-O-Ti angles in a series of (Ba,Sr,Ca)TiO3 perovskites and correlate with the observed variation of Tcs of the FE-PE... -
Local magnetic structures of YBCO high-Tc superconductors from neutron total ...
Understanding high-temperature superconductivity is a major aim of condensed-matter science, which is of fundamental importance and may ultimately allow the design of materials... -
Low-Temperature Structural Phase Transitions in GeV4S8
The defect thiospinel, GeV4S8 adopts a cubic structure at room temperature (space group F-43m). We have identified a new monoclinic phase of this material at 2K, which may be... -
Proximity induced magnetisation in topological insulator-antiferromagnetic he...
We aim at investigating a new method to create dissipation less currents. We combine a topological insulator with an antiferromagnet to induce ferromagnetic order in the... -
Variable Temperature Study of thallium and caesium azides
This proposal seeks to investigate the effect of temperature on the structures of thallium and caesium azide. High-resolution neutron powder diffraction data are necessary to... -
A Self-consistent Description of the Thermoelastic Properties of Dielectric P...
20 years ago, Anderson proposed that the thermoelastic properties of the dominant (mantle) phase within the Earth, MgSiO3 perovskite, could be described as a simple Debye solid.... -
Strain analysis of commensurate charge order/zener polaron ordering transitio...
High resolution powder diffraction data will be used to obtain lattice parameter and atomic coordinate variations as a function of temperature for Pr0.6Ca0.4MnO3, which has a... -
Magnetic structure of pyrochlore irridate Y2Ir2O7
We propose to study by powder neutron diffraction the ordered magnetic state of the pyrochlore compound Y2Ir2O7. There is currently an increasing interest in the condensed... -
Unexpected Dynamics of the Imidazolium Cation in the Crystals of a New Magnet...
The MIL DimimFeCl4 displays 3D antiferromagnetic ordering below 5.6K. The crystal structure at 10 K, solved by synchrotron XRPD, NPD and DFT calculations shows that it... -
Study of the protein denaturation in glassy matrices
The proposed experiment is addressed to use the MARI spectrometer to study the thermal denaturation process of the psychrophile enzyme alpha-amylase in presence of bioprotectant...
