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Raman Spectroscopic Study of the Optical Phonons of Mg2Si1−x Snx Solid Solutions

Yasseri, Mohammad and Schüpfer, Dominique and Chen, Limei and Kamila, Hasbuna and Müller, Eckhard and de Boor, Johannes and Klar, Peter J. (2020) Raman Spectroscopic Study of the Optical Phonons of Mg2Si1−x Snx Solid Solutions. Physica Status Solidi (RRL) - Rapid Research Letters. Wiley. doi: 10.1002/pssr.201900574. ISSN 1862-6254.

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Abstract

Mg2Si1−x Snx solid solutions are prepared in the composition range from x  = 0 to 1 by mechanical alloying using high‐energy ball milling followed by direct‐current sintering at 600–800 °C. X‐ray diffraction analysis confirms that the samples obtained are uniform solid solutions. Raman spectroscopy shows two first‐order phonon Raman bands and a distribution of Raman signals due to second‐order phonon Raman scattering. The first‐order Raman bands are assigned to the nondegenerate Raman‐forbidden F1u (LO) mode and the triply degenerate Raman‐allowed F2g mode. Both modes exhibit a linear shift of the phonon frequency with a composition showing a clear one‐mode behavior for this solid solution. The findings are discussed in the context of existing theories for the occurrence of the one‐mode or two‐mode behavior of phonons in solid solutions.

Item URL in elib:https://elib.dlr.de/135088/
Document Type:Article
Title:Raman Spectroscopic Study of the Optical Phonons of Mg2Si1−x Snx Solid Solutions
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Yasseri, MohammadGerman aerospace center, Institute of materials research, Köln, Germany and Justus Liebig university Giessen, Institute of inorganic and analytical chemistry, 35392 Giessen, GermanyUNSPECIFIED
Schüpfer, DominiqueCenter for Materials Research (LaMa) and Institute of Experimental Physics I, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, GermanyUNSPECIFIED
Chen, LimeiCenter for Materials Research (LaMa) and Institute of Experimental Physics I, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, GermanyUNSPECIFIED
Kamila, HasbunaGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Müller, EckhardGerman aerospace center, Institute of materials research, Köln, Germany and Justus liebig university Giessen, Institute of inorganic and analytical chemistry, 35392 Giessen, GermanyUNSPECIFIED
de Boor, JohannesGerman aerospace center, institute of materials research, köln, germanyhttps://orcid.org/0000-0002-1868-3167
Klar, Peter J.Center for Materials Research (LaMa) and Institute of Experimental Physics I, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, GermanyUNSPECIFIED
Date:6 March 2020
Journal or Publication Title:Physica Status Solidi (RRL) - Rapid Research Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1002/pssr.201900574
Publisher:Wiley
ISSN:1862-6254
Status:Published
Keywords:Raman Spectroscopic Study; Optical Phonons; Magnesium Tin Silicide; Solid Solutions
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:19 Oct 2020 09:46
Last Modified:19 Jan 2021 07:29

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