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Jerič, Marja und de Boor, Johannes und Jančar, Boštjan und Čeh, Miran (2016) An enhanced thermoelectric figure of merit for Sr(Ti0.8Nb0.2)O3 based on a Ruddlesden–Popper-polytype-induced microstructure. Journal of the European Ceramic Society, 36 (5), Seiten 1177-1182. Elsevier. doi: 10.1016/j.jeurceramsoc.2015.12.001. ISSN 0955-2219.
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Offizielle URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2015.12.001
Kurzfassung
Platelet crystals based on Ruddlesden–Popper (RP) polytypes prepared by molten-salt synthesis wereused to influence the microstructural development of Nb-doped SrTiO3(STO;Nb) perovskite and,consequently, to change the thermoelectric properties. Electron microscopy revealed intergrowth ofRP-polytypic phases within the STO;Nb solid-solution matrix phase. The morphology of the grains variedfrom isotropic to anisotropic, containing polytypic faults up to 100 µm in length. Such a microstructureincreased the thermoelectric figure of merit by 50% at 650◦C, due to substantially enhanced electricalconductivity, slightly increased Seebeck coefficient and lowered thermal conductivity.
| elib-URL des Eintrags: | https://elib.dlr.de/108670/ | ||||||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
| Titel: | An enhanced thermoelectric figure of merit for Sr(Ti0.8Nb0.2)O3 based on a Ruddlesden–Popper-polytype-induced microstructure | ||||||||||||||||||||
| Autoren: |
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| Datum: | 20 April 2016 | ||||||||||||||||||||
| Erschienen in: | Journal of the European Ceramic Society | ||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||
| In SCOPUS: | Ja | ||||||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||||||
| Band: | 36 | ||||||||||||||||||||
| DOI: | 10.1016/j.jeurceramsoc.2015.12.001 | ||||||||||||||||||||
| Seitenbereich: | Seiten 1177-1182 | ||||||||||||||||||||
| Verlag: | Elsevier | ||||||||||||||||||||
| ISSN: | 0955-2219 | ||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||
| Stichwörter: | Thermoelectric materials, Nb-doped SrTiO3, Ruddlesden–Popper polytypes, Seed crystals, Molten-salt synthesis | ||||||||||||||||||||
| HGF - Forschungsbereich: | Energie | ||||||||||||||||||||
| HGF - Programm: | Speicher und vernetzte Infrastrukturen | ||||||||||||||||||||
| HGF - Programmthema: | Thermische Energiespeicher | ||||||||||||||||||||
| DLR - Schwerpunkt: | Energie | ||||||||||||||||||||
| DLR - Forschungsgebiet: | E EV - Energieverfahrenstechnik | ||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | E - Thermochemische Prozesse (Speicher) (alt) | ||||||||||||||||||||
| Standort: | Köln-Porz | ||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Werkstoff-Forschung > Thermoelektrische Materialien und Systeme | ||||||||||||||||||||
| Hinterlegt von: | Yasseri, Mohammad | ||||||||||||||||||||
| Hinterlegt am: | 01 Dez 2016 09:52 | ||||||||||||||||||||
| Letzte Änderung: | 16 Mai 2022 08:45 |
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