YS-TaS2 and YxLa1-xS-TaS2 (0 = x = 1) Nanotubes: A Family of Misfit Layered Compounds

Hettler, S. ; Sreedhara, M.B. ; Serra, M. ; Sinha, S.S. ; Popovitz-Biro, R. ; Pinkas, I. ; Enyashin, A.N. ; Tenne, R. ; Arenal, R. (Universidad de Zaragoza)

Resumen: We present the analysis of a family of nanotubes (NTs) based on the quaternary misfit layered compound (MLC) YxLa1-xS-TaS2. The NTs were successfully synthesized within the whole range of possible compositions via the chemical vapor transport technique. In-depth analysis of the NTs using electron microscopy and spectroscopy proves the in-phase (partial) substitution of La by Y in the (La, Y)S subsystem and reveals structural changes compared to the previously reported LaS-TaS2 MLC-NTs. The observed structure can be linked to the slightly different lattice parameters of LaS and YS. Raman spectroscopy and infrared transmission measurements reveal the tunability of the plasmonic and vibrational properties. Density-functional theory calculations showed that the YxLa1-xS-TaS2 MLCs are stable in all compositions. Moreover, the calculations indicated that substitution of La by Sc atoms is electronically not favorable, which explains our failed attempt to synthesize these MLC and NTs thereof.

Idioma: Inglés

DOI: 10.1021/acsnano.9b09284

Año: 2020

Publicado en: ACS nano 14, 5 (2020), 5445-5458
ISSN: 1936-0851

Factor impacto JCR: 15.881 (2020)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 12 / 162 = 0.074 (2020) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 11 / 106 = 0.104 (2020) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 14 / 178 = 0.079 (2020) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 21 / 333 = 0.063 (2020) - Q1 - T1

Factor impacto SCIMAGO: 5.554 - Engineering (miscellaneous) (Q1) - Physics and Astronomy (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-79776-P

Tipo y forma: Article (PrePrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)