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Magnetic Excitations in Low-dimensional Antiferromagnet KFe2Se3
The proposal aims to measure the powder averaged magnetic excitations in KFe2Se3. The compound is related to the recently discovered Fe-Se,As superconductors and is based upon... -
Proton ordering and hydrogen bonding in the hydrous zinc phosphate hopeite, Z...
We request 4 days of beamtime on SXD in order to locate the protons and quantify their ordering within the structure of hopeite Zn3(PO4)2.4H2O. Hopeite is an important phase in... -
Strain effect on the magnetic ground state of the ferroelectric Ca3CoMnO6 system
The search for new ferroelectric materials, where the ferroelectricity results from magnetic frustration, has been a topic of great interest to the condensed matter physics... -
Is magnetic frustration behind the tetragonal-to-orthorhombic transition in t...
It has been argued that the tetragonal-to-orthorhombic structural transition found in all the parent phases of the Fe-pnictide superconductors is driven by frustration, and... -
Determination of the Crystallographic and Magnetic structures of RbMnBr3, RbF...
We propose to study the crystal structures of RbMnBr3, RbFeBr3 and RbNiBr3 between 300 and 0.3 K. RbMnBr3 under goes two structural phase transition by reducing Rb coordination.... -
High temperature superstructures in thermoelectric oxides
Sodium cobalate has emerged as one of the best thermoelectric materials. Our previous neutron Laue diffraction studies on SXD have found ordered arrays of multivacancy clusters,... -
Temperature dependence of the diffuse magnetic scattering in CsNiCl3: SXD dat...
The compound CsNiCl3 crystallises in a hexagonal structure and is comprised of chains of NiCl6 octahedra along the c-axis and Cs in-between acting as a spacer to separate the... -
Proton mobility in Solid Super Proton Conductor (H3O)SbTeO6 at controlled hum...
Super proton conductors are in the focus of interest because of their use in low temperature fuel cells. In this project we try to obtain information on proton mobility,... -
Incipient magnetic frustration in a metal organic-framework with windmill lat...
The aim of the proposed experiment is to use single-crystal neutron magnetic scattering experiments to study spin correlations in the correlated paramagnet regime of a chiral... -
Jahn-Tellar distortions in uranium compounds
A full understanding of the chemistry of the actinides has not been established, especially in comparison to transition metals. The treatment of nuclear waste by long term... -
Structure and Magnetism of Rb1-xFe2F6: Tuning the Valence of Charge-Ordered K...
We have recently discovered a new family of geometric frustrated magnets starting from the parent system, RbFe2F6, with crystallizes in the defect or β-pyrochlore structure... -
Inelastic neutron scattering study of PrTSi3 (T = Ir, Rh and Ru)
Recently we have synthesized and investigated three new ternary intermetallic compounds PrTSi3 (T = Ir, Rh and Ru) which form in BaNiSn3-type tetragonal structure (space group... -
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... -
Intensity anomalies and momentum distributions in liquid and solid H2/D2.
H2 and D2 are simple systems which can be used to bench mark the accuracy of VESUVIO measurements. Previous measurements performed in 2008 indicate the presence of an intensity... -
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... -
Atomic and magnetic structure of multiferroic hybrid perovskites
The novel electric, magnetic and multiferroic properties of the metal formate perovskites have resulted in substantial scientific attention over the past fifteen years. Their... -
Dynamics studies of water and ice in carbon nanohorns
Recent diffraction [GEM] and DINS [Vesuvio] studies of water in carbon nanohorns have suggested that there is substantial proton delocalisation along the H-bond between... -
Photocrystallography in retinal
Retinal plays a key role in visual perception. In the ground state it occurs in the cis form with a bent side chain, whilst after light exposure it assumes the trans form with... -
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 of the potential multiferroic GdCrO3
Because of the potential applications of multiferroicity, the discovery of a new multiferroic (MF) material is invariably met with great enthusiasm in the condensed matter...
