Ba₄Ge₂Sb₂Te₈Se₂ and Ba₂Ge₂Te4.5Se0.5: complex heteroanionic Ge-containing phases with extremely low thermal conductivities

Sweta Yadav; Swati; Jai Prakash

doi:10.1039/d5nj01642h

January 1, 2025New Journal of Chemistry

Ba₄Ge₂Sb₂Te₈Se₂ and Ba₂Ge₂Te4.5Se0.5: complex heteroanionic Ge-containing phases with extremely low thermal conductivities

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Key Points

Both Ba 4 Ge 2 Sb 2 Te 8 Se 2 and Ba 2 Ge 2 Te 4.5 Se 0.5 exhibit extremely low thermal conductivities.
Ba 2 Ge 2 Te 4.5 Se 0.5 shows a metal-to-insulator transition at temperatures below 20 K.
Detailed structural analyses confirm these phases are p-type semimetals with significant thermal properties.
Synthesis methods provide insights into the creation of Ge-containing phases with unique thermal characteristics.

Implication

Synthesis reveals two p-type semimetals with distinct thermal conductivities, highlighting their structural uniqueness.

Abstract

We report syntheses and detailed structural analyses of two novel phases, Ba 4 Ge 2 Sb 2 Te 8 Se 2 and Ba 2 Ge 2 Te 4.5 Se 0.5 , having extremely low k tot . Both phases are p-type semimetals with Ba 2 Ge 2 Te 4.5 Se 0.5 showing a metal-to-insulator transition below 20 K.

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Cite This Study

Yadav et al. (2025) studied this question.

synapsesocial.com/papers/68c1a12d54b1d3bfb60dc2e1 https://doi.org/10.1039/d5nj01642h

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Ba₄Ge₂Sb₂Te₈Se₂ and Ba₂Ge₂Te4.5Se0.5: complex heteroanionic Ge-containing phases with extremely low thermal conductivities

Key Points

Implication

Abstract

Discussion

Cite This Study

Ba₄Ge₂Sb₂Te₈Se₂ and Ba₂Ge₂Te4.5Se0.5: complex heteroanionic Ge-containing phases with extremely low thermal conductivities

Key Points

Implication

Abstract

Discussion

Cite This Study

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