Details of Grant 

EPSRC Reference:	GR/L37229/01
Title:	NEUTRON SCATTERING STUDIES OF SOLID STATE MATERIALS
Principal Investigator:	Powell, Professor A
Other Investigators:
Researcher Co-Investigators:
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Department:	Sch of Engineering and Physical Science
Organisation:	Heriot-Watt University
Scheme:	Standard Research (Pre-FEC)
Starts:	09 July 1997	Ends:	08 July 2000	Value (£):	9,441
EPSRC Research Topic Classifications:
EPSRC Industrial Sector Classifications:	No relevance to Underpinning Sectors
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Summary on Grant Application Form
Neutron beam-time is sought for a variety of experiments to support our research effort into oxides and sulphides. Powder neutron diffraction data are essential to our studies of defect ternary sulphides containing cations with almost identical X-ray scattering powers. Neutron data allow the nature and extent of cation ordering, on which the properties of these materials critically depend, to be determined. A sub-set of the materials to be prepared are designed to lie in the region of the phase diagram where transitions from a semiconducting spinel phase to a metallic nickel arsenide phase can be effected by pressure. Measurements at different pressures will permit detailed investigation of these transitions. High resolution powder neutron diffraction data will be used to study distortions to the oxide sublattice of perovskite oxides which exhibit Giant Magnetoresistance in an effort to establish structure-property correlations. Neutrons are also important to our investigations of intercalation compounds. Poorly crystalline organic intercalates of metal sulphides are not generally well-suited to diffraction measurements. Incoherent inelastic neutron scattering provides an alternative means of characterising these novel materials. In addition, we seek to extend our use of neutron Compton scattering to the study of Li-ion dynamics in a range of intercalates.
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Organisation Website:	http://www.hw.ac.uk