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Total scattering study of the orientational phase transition in para-terphenyl
There is currently a resurgence of interest in phase transitions in orientationally disordered molecular crystals. This is partly driven by the fact that new experimental and... -
Magnetic phase transitions in geometrically frustrated SrHo2O4
We propose to probe the development of the low-temperature magnetism in SrHo2O4 using a high count rate diffractometer such as WISH or GEM. SrHo2O4 belongs to a family of... -
Low temperature phases of WO3 a reinvestigation
WO3 is an important technological material with wide usage in gas-sensing devices but its low temperature phases are still mysterious. There are conflicting reports in the... -
Local structure, dynamics and magnetism of the phases of cobalt imidazolate
This proposal concerns the metal-organic framework (MOF), cobalt imidazolate. Imidazole (im) is a small, flat organic molecule that forms slightly bent metal-im-metal linkages,... -
Quantifying the volume isotope effect in high-pressure forms of ice
Water ice forms a remarkable diversity of structures, occurring in as many as 17 crystalline forms. Water ice also shows other interesting and unusual properties. For example,... -
The Dynamics of Breathing Metal-Organic Frameworks from Total Scattering
Metal-organic framework materials are a topical family of nanoporous solids that have potential applications in molecular storage, separation and catalysis. Some of these... -
Decomposition studies of Li(1-x)NaxND2, LiNa2(ND2)3 and Li3Na(ND2)4
We ask for 3 days on GEM to study in-situ the decomposition of the Na-substituted LiNH2 phases, Li1-xNaxND2, LiNa2(ND2)3, Li3Na(ND2)4 and their reactions with LiD. LiNH2 is the... -
Neutron diffraction study of the casting technology of antique bronze coins
Neutron tomography data on high-Pb antique bronze coins indicated that two different copper alloy phases are formed during the casting process. We propose to use GEM for... -
Round Robin on TOF Texture Analysis
In view of advances in texture research at pulsed neutron sources, we propose that ISIS participates in a 'Texture Round Robin' to benchmark the existing texture analysis... -
How molecular solids prepare for phase transitions: The phase transition in o...
Oxalyl chloride, which is a liquid at RT, forms a disordered phase (I) on cooling to 260 K. This phase is unstable with respect to an ordered phase (II) below 250 K, but in... -
Origin of the structural relaxation in ice V and the H/D volume isotope effect
Ice V is disordered monoclinic polymorph of water ice, with a complex structural topology. In our work on ice V (recovered to atmospheric pressure at liquid-nitrogen... -
Structural Phase Transition with a Large Volume Change in (Bi,Nd)FeO3
BiFeO3 attracts considerable attention because of its multiferroic and ferroelectric properties. Nd-substitutions in antiferromagnetic BiFeO3 induce a significant ferromagnetic... -
Deammoniation Investigations of the ammines MX2.nNH3 (M= Mg, X= I,Cl,Br)- pot...
The applicants seek 4 days of beam time on POLARIS to study the deammoniation process of synthesised M(NH3)6X2 (M=Mg, X=I, Cl, Br) which are an important class of materials for... -
Neutron diffraction experiments on an Etruscan vase
An antique vase from an Etruscan necropolis was made available for neutron-based experiments at ISIS. Preliminary studies on this sample have shown unusual features and opened... -
Low-temperature structural phase transitions in CuSeO4·5D2O and CuBeF4·5D2O
The isostructural family of compounds that includes the familiar copper sulfate pentahydrate and the two less familiar title materials, has for decades been a model for studying... -
Local structures and dynamics of new functional oxides
The melilite family are new xoide ion conductors with high mobility at low temperatures. Average structures suggest that the ability of the structure to accomodate high levels... -
Investigation of the hydrogen-bonded zero area expansion material 4-chloroimi...
We will investigate the structure of 4-chloroimidazole a material which undergoes extreme anisotropic thermal expansion. This is believed from our initial X-ray data to be due...
