Negative Thermal Expansion in (HfMg)(WO4)3
โ Scribed by Tomoko Suzuki; Atsushi Omote
- Book ID
- 108575837
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 504 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0002-7820
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Sc 2 (WO 4 ) 3 has been found to show the highly unusual property of negative thermal expansion over a temperature range of 10 to 1073 K. Powder neutron diffraction data from 10 to 450 K shows an essentially linear decrease in cell volume as a function of temperature. The intrinsic linear coefficien
FIG. 1. Structure of Y (WO ) showing YO octahedra (white), W(1)O tetrahedra (light gray), and W(2)O tetrahedra (dark gray).
Monoclinic NbOPO 4 was found to undergo a readily reversible 5rst-order phase transition at 2923C. The connectivity of the NbO 6 octahedra and PO 4 tetrahedra remains the same throughout the transition, but above the transition the symmetry has increased to orthorhombic and Z has decreased by a fact