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Anthony E. Phillips, SMF Group, Cavendish Laboratory
Thursday 22 May 2008, 16:00-16:30
Accentuate the negative: anomalous thermal expansion in cyanide frameworks
- đ¤ Speaker: Anthony E. Phillips, SMF Group, Cavendish Laboratory
- đ Date & Time: Thursday 22 May 2008, 16:00 - 16:30
- đ Venue: Mott Seminar Room, Cavendish Laboratory, Department of Physics
Abstract
X-ray diffraction is one of the most powerful methods available for probing the structures of materials. Recent developments have made it possible to modify the temperature or pressure over the course of an experiment, allowing the response to these changes to be monitored to atomic resolution. I have used this technique to investigate the unusual and industrially useful phenomenon of negative thermal expansion (i.e., a decrease in volume upon heating) in a family of cyanide-bridged frameworks. These include a newly discovered polymorph of cadmium cyanide which displays the largest isotropic negative thermal expansion currently known.
Series This talk is part of the Physics and Chemistry of Solids Group series.
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