Negative Thermal Expansion from 0.3 to 1050 Kelvin in ZrW <sub>2</sub> O <sub>8</sub>
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- T. A. Mary
- T. A. Mary, J. S. O. Evans, A. W. Sleight, Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
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- J. S. O. Evans
- T. A. Mary, J. S. O. Evans, A. W. Sleight, Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
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- T. Vogt
- T. Vogt, Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
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- A. W. Sleight
- T. A. Mary, J. S. O. Evans, A. W. Sleight, Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
抄録
<jats:p> Negative thermal expansion was found for ZrW <jats:sub>2</jats:sub> O <jats:sub>8</jats:sub> from 0.3 kelvin to its decomposition temperature of about 1050 kelvin. Both neutron and x-ray diffraction data were used to solve and refine the structure of this compound at various temperatures. Cubic symmetry persists for ZrW <jats:sub>2</jats:sub> O <jats:sub>8</jats:sub> over its entire stability range. Thus, the negative thermal expansion behavior is isotropic. Essentially the same behavior was found for isostructural HfW <jats:sub>2</jats:sub> O <jats:sub>8</jats:sub> . No other materials are known to exhibit such behavior over such a broad temperature range. These materials are finding applications as components in composites in order to reduce the composites' overall thermal expansion to near zero. </jats:p>
収録刊行物
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- Science
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Science 272 (5258), 90-92, 1996-04-05
American Association for the Advancement of Science (AAAS)
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詳細情報
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- CRID
- 1361137046203559936
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- NII論文ID
- 80008943802
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- ISSN
- 10959203
- 00368075
- http://id.crossref.org/issn/00368075
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