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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... -
Search for magnetic correlations in Fe phosphide superconductors
We propose to use inelastic neutron scattering to search for the existence of spin fluctuations in two iron phosphide superconductors, LaFePO and Sr2ScFePO3. The objective is to... -
Amorphous Micrometre-Sized Water Ice Particles for Planetary Science Experime...
We request 2 days on SANDALS to characterise the temperature dependent properties of amorphous icy particles as they will be used in a more detailed study on NIMROD in Feburary... -
Magnetic excitation in triangular latticce antiferromagnet alpha-CaCr2O4
The triangular Heisenberg antiferromagnet is the classic example of the frustrated magnet, here the ground state forms a non-collinear 120° structure. A number of different... -
Room temperature ferromagnetic/ferroelectric ordering in BaTiO3 - BiFeO3 - Pb...
There are very few genuine claims of materials that are ferroelectric and ferromagnetic at room temperature. In This proposal we will study both textured and non texture BaTiO3... -
Magnetic excitation spectrum of the Helimagnetic Spinel compound ZnCr2Se4
ZnCr2Se4 is a magnetically frustrated spinel compound with an incommensurate ground state. At low temperatures it displays a spin spiral structure propagating along the (100)... -
INS Study of Deep Eutectic Solvents
Deep Eutectic Solvents (DESs) are emerging as low-cost and environment-friendly solvents for industrial process. DESs are formed by the association of a hydrogen bond-capable... -
Structure of amorphous Porous Aromatic Framework 1
Materials that are porous at the atomic scale have proven to be important for many applications, including gas capture and catalysis. Recently it has become possible to make... -
Characterisation of the on-top vibrational mode of the surface hydride in bet...
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Evaluation of inelasticity effects in diffraction
For total diffraction measurements using neutrons it is important to correct the data for inelasticity effects, especially for samples containing light atoms. Conventionally... -
Origin of spin excitation in single-layer cuprate Bi2201
We propose a measurement of spin excitation in heavily underdoped Bi2201 at MERLIN with intent to elucidate an origin of "hourglass" excitation in hole-doped cuprates. Recent... -
Investigating the use of Merlin for dynamic PDF measurements
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Continued studies of the high temperature structural behaviour of Ca2Mn3O8
We recently synthesised a new layered manganes oxide with a frustrated connectivity of Mn4+ ions. Variable temperature studies demonstrated a deviation from linearity at... -
Quantum Spin Ice ground states and Structural Disorder in non-Kramers rare-ea...
Pyrochlore oxides based on non-Kramers rare-earth ions, such as Pr3+ and Tb3+, are candidate materials for the formation of the Quantum Spin Ice. However, structural disorder is... -
Crystal field excitations of Co ions in the ideal triangular lattice antiferr...
We propose to measure crystal field transitions of Co ions in Ba3CoSb2O9, proposed to be a unique experimental realization of the S=1/2 antiferromagnet on the triangular... -
Spin-Lattice coupling in Frustrated Triangular Lattice Antiferromagnet AFeO2 ...
In this proposal, we would like to propose to perform neutron diffraction experiments on the powder samples of the frustrated antiferromagnets AFeO2 (A=Cu and Ag) using WISH. In... -
Spin dynamics in FeSi
At low temperatures FeSi is a non-magnetic insulator, but becomes a metallic paramagnet for T > 300K. It has been proposed to be a Kondo insulator in which local electron... -
Nuclear and magnetic structure determination of Ni-Mn-(In-Sn) Heusler alloys
The aim of the present proposal is to relate the macroscopic magnetic properties with the nuclear and magnetic structure of a series of Ni48Mn36In16-xSnx Heusler alloys. These... -
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... -
Spin excitations in the paramagnetic phase of a charge-ordered bilayered mang...
In a previous experiment we measured the spin wave spectrum of the half-doped bilayer manganite Pr(Ca,Sr)2Mn2O7 in its spin, charge and orbital ordered phase. The data, which...
