Sankhla, Aryan und Yasseri, Mohammad und Kamila, Hasbuna und Müller, Eckhard und de Boor, Johannes (2019) Experimental investigation of the predicted band structure modification of Mg2X (X: Si, Sn) thermoelectric materials due to scandium addition. Journal of Applied Physics. American Institute of Physics (AIP). doi: 10.1063/1.5089720. ISSN 0021-8979.
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Kurzfassung
Modification of the electronic band structure via doping is an effective way to improve the thermoelectric properties of a material. Theoretical calculations from a previous study have predicted that Sc substitution on the Mg site in Mg2X materials drastically increase their Seebeck coefficient. Herein, we experimentally studied the influence of scandium substitution on the thermoelectric properties of Mg2Si0.4Sn0.6 and Mg2Sn. We found that the thermoelectric properties of these materials are unaffected by Sc addition, and we did not find hints for a modification of the electronic band structure. The SEM-energy dispersive X-ray analysis revealed that the scandium does not substitute Mg but forms a secondary phase (Sc-Si) in Mg2Si0.4Sn0.6 and remains inert in Mg2Sn, respectively. Thus, this study proves that scandium is an ineffective dopant for Mg2X materials.
elib-URL des Eintrags: | https://elib.dlr.de/130554/ | ||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||
Titel: | Experimental investigation of the predicted band structure modification of Mg2X (X: Si, Sn) thermoelectric materials due to scandium addition | ||||||||||||||||||||||||
Autoren: |
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Datum: | 11 Juni 2019 | ||||||||||||||||||||||||
Erschienen in: | Journal of Applied Physics | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||
DOI: | 10.1063/1.5089720 | ||||||||||||||||||||||||
Verlag: | American Institute of Physics (AIP) | ||||||||||||||||||||||||
ISSN: | 0021-8979 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Ball milling; silicides; thermoelectric materials | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Technik für Raumfahrtsysteme | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | R SY - Technik für Raumfahrtsysteme | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Systemtechnologien (alt) | ||||||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Werkstoff-Forschung > Thermoelektrische Materialien und Systeme | ||||||||||||||||||||||||
Hinterlegt von: | Yasseri, Mohammad | ||||||||||||||||||||||||
Hinterlegt am: | 14 Nov 2019 17:39 | ||||||||||||||||||||||||
Letzte Änderung: | 31 Okt 2023 14:16 |
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