RT Journal Article
T1 Characterization and Decomposition of the Natural van der Waals SnSb<sub>2</sub>Te<sub>4</sub> under Compression
A1 Sans, Juan A.
A1 Vilaplana, Rosario
A1 da Silva, E. Lora
A1 Popescu, Catalin
A1 Cuenca Gotor, Vanesa P.
A1 Andrada Chacón, Adrián
A1 Sánchez Benítez, Francisco Javier
A1 Gomis, Oscar
A1 Pereira, André L. J.
A1 Rodríguez Hernández, Plácida
A1 Muñoz, Alfonso
A1 Daisenberger, Dominik
A1 García Domene, Braulio
A1 Segura, Alfredo
A1 Errandonea, Daniel
A1 Kumar, Ravhi S.
A1 Oeckler, Oliver
A1 Urban, Philipp
A1 Contreras García, Julia
A1 Manjón, Francisco J.
AB High pressure X-ray diffraction, Raman scattering, and electrical measurements, together with theoretical calculations, which include the analysis of the topological electron density and electronic localization function, evidence the presence of an isostructural phase transition around 2 GPa, a Fermi resonance around 3.5 GPa, and a pressure-induced decomposition of SnSb2Te4 into the high-pressure phases of its parent binary compounds (α-Sb2Te3 and SnTe) above 7 GPa. The internal polyhedral compressibility, the behavior of the Raman-active modes, the electrical behavior, and the nature of its different bonds under compression have been discussed and compared with their parent binary compounds and with related ternary materials. In this context, the Raman spectrum of SnSb2Te4 exhibits vibrational modes that are associated but forbidden in rocksalt-type SnTe; thus showing a novel way to experimentally observe the forbidden vibrational modes of some compounds. Here, some of the bonds are identified with metavalent bonding, which were already observed in their parent binary compounds. The behavior of SnSb2Te4 is framed within the extended orbital radii map of BA2Te4 compounds, so our results pave the way to understand the pressure behavior and stability ranges of other “natural van der Waals” compounds with similar stoichiometry.
PB American Chemistry Society
SN 0020-1669
SN 1520-510X
YR 2020
FD 2020-07-08
LK https://hdl.handle.net/20.500.14352/116549
UL https://hdl.handle.net/20.500.14352/116549
LA eng
NO Sans, Juan A., et al. «Characterization and Decomposition of the Natural van Der Waals SnSb2 Te4 under Compression». Inorganic Chemistry, vol. 59, n.o 14, julio de 2020, pp. 9900-18. DOI.org (Crossref), https://doi.org/10.1021/acs.inorgchem.0c01086.
NO Ministerio de Economía y Competitividad (España)
NO Generalitat Valenciana
NO Marie Sklodowska Curie
DS Docta Complutense
RD 18 abr 2025