Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction

Xiyang Li; Zhigang Zhang; Lunhua He; Maxim Avdeev; Yang Ren; Huaizhou Zhao; Fangwei Wang

doi:10.1088/1674-1056/aba09c

Author(s)

Xiyang Li
Zhigang Zhang
Lunhua He
Maxim Avdeev
Huaizhou Zhao
Fangwei Wang

Detail(s)

Original language	English
Article number	106101
Journal / Publication	Chinese Physics B
Volume	29
Issue number	10
Publication status	Published - Sept 2020
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1088/1674-1056/aba09c Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85094210282&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(fb039bf6-14fb-4a0d-8d1a-c04106c5a974).html

Abstract

Nanostructuring, structure distortion, and/or disorder are the main manipulation techniques to reduce the lattice thermal conductivity and improve the figure of merit of thermoelectric materials. A single-phase α-MgAgSb sample, MgAg_0.97Sb_0.99, with high thermoelectric performance in near room temperature region was synthesized through a high-energy ball milling with a hot-pressing method. Here, we report the average grain size of 24-28 nm and the accurate structure distortion, which are characterized by high-resolution neutron diffraction and synchrotron x-ray diffraction with Rietveld refinement data analysis. Both the small grain size and the structure distortion have a contribution to the low lattice thermal conductivity in MgAg_0.97Sb_0.99.

Research Area(s)

diffraction, grain size, structure distortion, thermoelectric material

Citation Format(s)

[ RIS ] [ BibTeX ]

Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction. / Li, Xiyang; Zhang, Zhigang; He, Lunhua et al.
In: Chinese Physics B, Vol. 29, No. 10, 106101, 09.2020.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Li, X, Zhang, Z, He, L, Avdeev, M, Ren, Y, Zhao, H & Wang, F 2020, 'Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction', Chinese Physics B, vol. 29, no. 10, 106101. https://doi.org/10.1088/1674-1056/aba09c

Li, X., Zhang, Z., He, L., Avdeev, M., Ren, Y., Zhao, H., & Wang, F. (2020). Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction. Chinese Physics B, 29(10), Article 106101. https://doi.org/10.1088/1674-1056/aba09c

Li X, Zhang Z, He L, Avdeev M, Ren Y, Zhao H et al. Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction. Chinese Physics B. 2020 Sept;29(10):106101. doi: 10.1088/1674-1056/aba09c

Li, Xiyang ; Zhang, Zhigang ; He, Lunhua et al. / Grain size and structure distortion characterization of α-MgAgSb thermoelectric material by powder diffraction. In: Chinese Physics B. 2020 ; Vol. 29, No. 10.