Journal article

Publication year: 2020

Journal: physica status solidi - Rapid Research Letters

Volume number: 14

Issue number: 3

ISSN: 1862-6254

eISSN: 1862-6270

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/pssr.201900574

Publisher: Wiley

Abstract: 
Mg2Si1-xSnx 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 degrees 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 F-1u (LO) mode and the triply degenerate Raman-allowed F-2g 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.

Harvard Citation style: Yasseri, M., Schuepfer, D., Chen, L., Kamila, H., Mueller, E., de Boor, J., et al. (2020) Raman Spectroscopic Study of the Optical Phonons of Mg₂Si_1-xSn_x Solid Solutions, physica status solidi - Rapid Research Letters, 14(3), Article 1900574. https://doi.org/10.1002/pssr.201900574

APA Citation style: Yasseri, M., Schuepfer, D., Chen, L., Kamila, H., Mueller, E., de Boor, J., & Klar, P. (2020). Raman Spectroscopic Study of the Optical Phonons of Mg₂Si_1-xSn_x Solid Solutions. physica status solidi - Rapid Research Letters. 14(3), Article 1900574. https://doi.org/10.1002/pssr.201900574