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Elucidating Magnetic Order in a Novel Iron Oxalate KFe(C2O4)F by Powder Neutr...
The increasing demand for portable energy means that the search for new electrode materials for rechargeable solid-state batteries is a key challenge in materials science.... -
Chemically Tailorable Frustrated Systems, Magnetic order in the J1/J1 rectan...
This proposal forms part of an exploratory study of new mixed anion coordination compounds. We have prepared a family of oxalate-fluorides, which are anticipated to have... -
Which is it? ¿ Neutrons distinguish monolayers xrays can¿t.
We have obtained the monolayer structure diffraction patterns from several iodoalkanes adsorbed on graphite, of interest in the study of non-covalent bonding. However, it is... -
Magnetoelastic coupling effect on multiferroic behaviors in different types o...
We propose to perform high resolution neutron diffraction on powder samples of the frustrated antiferromagnets Ag1-xCuxFe1-yGayO2 using HRPD. CuFe1-yGayO2 and AgFeO2 have... -
Dynamic spin correlation length in the hedgehog spin vortex phase and superco...
Magnetism is believed to play an important role in many quantum phenomena such as superconductivity and nematicity in iron-based superconductors. One of the signatures is that... -
A detailed study of magnetic diffuse scattering in a low-dimension ferromagne...
We have carried out detailed investigations on the ferromagnetic (FM) Kondo lattice CePdSb, in polycrystal as well as single crystal form (TC=17.5K) using magnetization, neutron... -
Stochastic vs. Intermolecular Motions in Strongly Associated Liquids: The Cas...
Neutron scattering is a powerful technique to study stochastic motions in liquids but it requires an energy resolution well below the meV range. As a consequence, quasielastic... -
Spin excitation anisotropy in FeSe
Iron selenide (FeSe), a member of "11" family in iron-based superconductors, does not have static AF order; thus, the structural transition and associated nematic order have... -
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... -
Investigation of the hydrogen bonding and anisotropic displacement parameters...
We will investigate the structure of 4-chloroimidazole, which undergoes extreme anisotropic thermal expansion. This is believed from our initial x-ray results to be due to a... -
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... -
Investigating the speciation of hydrocarbonaceous deposits formed during oxid...
Natural gas comprising mainly methane, ethane and propane is widely used as a raw material for different petrochemical applications. For example, polyethylene and poly-propylene... -
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... -
Neutron Diffraction Study of a Spin-1/2 Pyrochlore Lu2Mo2O5N2
Ammonolysis of R2Mo2O7 pyrochlores gives R2Mo2O5N2 containing S = ½ Mo5+. They are excellent candidate materials for investigation of quantum spin liquid phenomena and we have... -
Hydrogen interactions in framework materials : part deux
Hydrogen binding to coordinatively unsaturated metal sites (CUMCs) in metal-organic frameworks (MOFs) has been extensively studied in our group using neutron powder diffraction... -
Explore the spectrum of spin excitations in non-superconducting BaFe1.8Ni0.1C...
Recently, our neutron scattering experiments on electron doped BaFe2-xNixAs2 and hole doped Ba1-xKxFe2As2 suggest that the presence of both high-energy spin excitations giving... -
Probing the interaction of hydrogen with supported gold nanoparticles
Small gold nanoparticles (1-5 nm) supported on metal oxides are extremely active catalysts for C-C coupling, aerobic oxidations and selective hydrogenations. The interaction of... -
Uptake of Molecular Hydrogen by High-performance Carbon Nanostructures (IRIS)
High sorption capacities and enhanced interaction strengths are the two most fundamental prerequisites for the deployment of carbon-based materials as hydrogen-storage media. In... -
Magnetic excitations in mesoporous hematite
We have recently prepared mesoporous forms of various metals oxides. In some cases the imposition of a mesostructure changes other properties of the material significantly. One... -
The phase diagram of the spin-density-wave metamagnet Sr3Ru2O7
Sr3Ru2O7 is an unusual layered oxide metamagnetic metal. It has been know for some time that the application of a large magnetic field (~8 T) perpendicular to the RuO2 planes...