Strontium telluride
| Crystal structure | ||||||||||||||||
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| __ Sr 2+ __ Te 2− | ||||||||||||||||
| General | ||||||||||||||||
| Surname | Strontium telluride | |||||||||||||||
| Ratio formula | SrTe | |||||||||||||||
| Brief description |
white solid |
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| properties | ||||||||||||||||
| Molar mass | 215.22 g mol −1 | |||||||||||||||
| Physical state |
firmly |
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| density |
4.83 g cm −3 |
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| Melting point |
1490 ° C |
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| Refractive index |
2.408 |
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| safety instructions | ||||||||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C | ||||||||||||||||
Strontium telluride is an inorganic chemical compound of strontium from the group of tellurides .
properties
Strontium telluride is a white solid. It has a cubic crystal structure with the space group Fm 3 m (space group no. 225) . At 10.9 GPa there is a phase transition to a CsCl structure with the space group Pm 3 m (No. 221) .
use
Strontium telluride can be used to make highly effective thermocouples .
Individual evidence
- ↑ a b c d e f Roger Blachnik (Ed.): Pocket book for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 752 ( limited preview in Google Book search).
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ L. Shi, Y. Duan, X. Yang, L. Qin: Structural stabilities, electronic, elastic and optical properties of SrTe under pressure: A first-principles study. In: Physica B: Condensed Matter. 406, No. 2, 2011, pp. 181-186, doi: 10.1016 / j.physb.2010.10.038
- ↑ Jan Oliver Löfken: Record material for more electricity from hot exhaust gases . Wissenschaft aktuell, September 20, 2012. According to Kanishka Biswas et al: High-performance bulk thermoelectrics with all-scale hierarchical architectures . In: Nature . tape 489 , no. 7416 , September 20, 2012, p. 414-418 , doi : 10.1038 / nature11439 .