Negative thermal expansion from 0.3 to 1050 Kelvin in ZrW2O8

Science

Volumn 272, Issue 5258, 1996, Pages 90-92

  Mary, T A ^a   Evans, J S O ^a   Vogt, T ^b   Sleight, A W ^a  

^a OREGON STATE UNIVERSITY   (United States)

^b BROOKHAVEN NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0002977724     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.272.5258.90     Document Type: Article

References (19)

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9. J S. O Evans, T. A Mary, A. W Sleight, in preparation
10. According to the method of I. D. Brown and K. K Wu [Acta Crystallogr. Sect. B 32, 1957 (1976)], valence calculations show this interaction to contribute approximately 5% of the total bonding around W1 and 15% of the bonding around O3.
11. 8 is actually metastable Small crystals suitable for x-ray diffraction studies were isolated from a sample that had been heated at 1475 K for 4 hours
12. A. Bienenstock and G Burley, J. Phys. Chem Solids 24, 1271 (1953).
13. J D. Gale, GULP (General Utility Lattice Program). Royal Institution of Great Britain, London, 1993.
14. (Latin small letter esh sign)/kT) represents a weighted average over all the populated normal modes, both those with negative (contracting) and those with positive (expanding) contributions to the overall volume.
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19. Supported by the Oregon Metals Initiative, Teledyne Wah Chang Albany, NSF, and the U.S. Department of Energy