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Nature 425, 674-676 (16 October 2003) | doi:10.1038/425674a
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Materials science: Zero-expansion plan
Arthur Sleight1
Abstract
Some materials don't expand or contract as they are heated. A new example is a metallic compound, for which the movement of electrons between atoms is the likely explanation for its 'zero thermal expansion'.
Most solids expand on heating, because the distance between their atoms increases. This is known as positive thermal expansion.
- Arthur Sleight is in the Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003, USA.
Email: arthur.sleight@orst.edu
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