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Details of Grant 

EPSRC Reference: GR/R34615/01
Title: Novel simultaneous conduction calorimeter - X-ray diffractometer.
Principal Investigator: Salje, Professor EKH
Other Investigators:
Attfield, Professor JP Redfern, Professor S
Researcher Co-Investigators:
Project Partners:
Department: Earth Sciences
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 01 June 2001 Ends: 31 May 2005 Value (£): 393,235
EPSRC Research Topic Classifications:
Chemical Structure Instrumentation Eng. & Dev.
Materials Characterisation
EPSRC Industrial Sector Classifications:
Chemicals Electronics
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
We propose constructing an instrument capable of simultaneous X-ray diffraction and conduction calorimetry at temperatures down to around 20 K. It will be used to study the critical phenomena associated with structural, magnetic, and electronic transitions in perovskite-related oxides by simultaneoL measurement of heat effects. The calorimetric technique will be based on conduction calorimetry, allowing scanning to be carried out continuously in cooling and heating experiments at rates as low as 0.05 K per hour, detecting heat effects at a resolution of around 100 nW. Simultaneously, it will be possible to measure changes in micro-elastic strain within the sample using rocking curve techniques to monitor the microscopic and mesoscopic changes in structure by X-ray diffraction. The method will be applied to Mn-bearing perovskite-related materials, as well as archetypal perovskite transitions which display ferroelastic, ferromagnetic, and ferroelectdc behaviour, as well as GMR phenomena. Coupling between these phenomena, cation ordering, charge-ordering and incipient phase segregation processes will be elucidated in a series of model testing experiments.
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Organisation Website: http://www.cam.ac.uk