The thermal expansion and high temperature transformation of SnS and SnSe*
Abstract
The thermal expansion of SnS and SnSe has been studied above room temperature up to the melting point of 1163 ± 5K and 1135 ± 5K, respectively, by X-ray diffraction techniques using a 190 mm Unicam high temperature camera. The changes of the lattice parameters indicate that the atomic positions in the (010) plane approach a square planar arrangement with increasing temperature. The transformation of SnS and SnSe from orthorhombic to a pseudotetragonal orthorhombic modification with a ≈ c < b is observed at 878 ± 5K and 807 ± 5K, respectively. The lattice parameters of the high temperature modifications are for SnS [unk] = 4.162 ± 0.006Å, b= 11.517 ± 0.015Å at 932 K and for SnSe [unk] = 4.313 ± 0.006Å, b = 11.703 ± 0.015Å at 820 K. Both compounds maintain this structure type up to the melting points.
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Artikel in diesem Heft
- Temperature dependence of quadratic electrooptic and electrostrictive effects in the paraelectric phase of methylammonium alums
- The thermal expansion and high temperature transformation of SnS and SnSe*
- The crystal structure of γ Ag8GeTe6, a potential mixed electronic-ionic conductor*
- Crystal and molecular structure of 2-(S-l-phenylethyl)-3-p-bromophenyloxaziridine
- Crystal and molecular structure of lactarorufin B 3,8-ether 14-p-bromobenzoate
- Comparison between F[unk] and Δ F Fourier syntheses for the localization of hydrido-hydrogen atoms linked to transition metal atoms
- 19. Diskussionstagung der Arbeitsgemeinschaft Kristallographie der Deutschen Mineralogischen Gesellschaft, der Deutschen Physikalischen Gesellschaft und der Gesellschaft Deutscher Chemiker 19. bis 21. März 1979 in Aachen
Artikel in diesem Heft
- Temperature dependence of quadratic electrooptic and electrostrictive effects in the paraelectric phase of methylammonium alums
- The thermal expansion and high temperature transformation of SnS and SnSe*
- The crystal structure of γ Ag8GeTe6, a potential mixed electronic-ionic conductor*
- Crystal and molecular structure of 2-(S-l-phenylethyl)-3-p-bromophenyloxaziridine
- Crystal and molecular structure of lactarorufin B 3,8-ether 14-p-bromobenzoate
- Comparison between F[unk] and Δ F Fourier syntheses for the localization of hydrido-hydrogen atoms linked to transition metal atoms
- 19. Diskussionstagung der Arbeitsgemeinschaft Kristallographie der Deutschen Mineralogischen Gesellschaft, der Deutschen Physikalischen Gesellschaft und der Gesellschaft Deutscher Chemiker 19. bis 21. März 1979 in Aachen
