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Can I read New Trick for an Old Dog: From Prediction to Properties of “Hidden Clathrates” Ba~2~Zn~5~As~6~ and Ba~2~Zn~5~Sb~6~ on EtoBox?
New Trick for an Old Dog: From Prediction to Properties of “Hidden Clathrates” Ba~2~Zn~5~As~6~ and Ba~2~Zn~5~Sb~6~ by Philip Yox; Frank Cerasoli; Arka Sarkar; Victoria Kyveryga; Gayatri Viswanathan; Davide Donadio; Kirill Kovnir is a Chemistry article available to read on EtoBox.
What is New Trick for an Old Dog: From Prediction to Properties of “Hidden Clathrates” Ba~2~Zn~5~As~6~ and Ba~2~Zn~5~Sb~6~ about?
The zinc-antimony phase space has been heavily investigated due to the structural complexity and abundance of highperforming thermoelectric materials. Consequentially, the desire to use zinc and antimony as framework elements to encage rattling cations and achieve phonon-glass-electron-crystal-type properties has remained an enticing goal with only two alkali metal clathrates to date, Cs 8 Zn 18 Sb 28 and K 58 Zn 122 Sb 207 . Guided by Zintl electroncounting predictions, we explored the Ba-Zn-Pn (Pn = As, Sb) phase space proximal to the expected composition of the type-I clathrate. In situ powder X-ray diffraction studies revealed two "hidden" compounds which can only be synthesized in a narrow temperature range. The ex situ synthesis and crystal growth unveiled that instead of type-I clathrates, compositionally close but structurally different new clathrate-like compounds formed, Ba 2 Zn 5 As 6 and Ba 2 Zn 5 Sb 6 . These materials crystallize in a unique structure, in the orthorhombic space group Pmna with the Wyckoff sequence i 2 h 6 gfe. Single-phase synthesis enabled the exploration of their transport properties. Rattling of the Ba cations in oversized cages manifested low ther
Who reads New Trick for an Old Dog: From Prediction to Properties of “Hidden Clathrates” Ba~2~Zn~5~As~6~ and Ba~2~Zn~5~Sb~6~?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Philip Yox; Frank Cerasoli; Arka Sarkar; Victoria Kyveryga; Gayatri Viswanathan; Davide Donadio; Kirill Kovnir
- Publisher
- American Chemical Society (ACS)
- Published
- 2023
- Language
- EN
- Field
- Chemistry (Physical Sciences)