Tellurides are in years considered among the best intermetallic compounds for thermoelectric applications in the low-intermediate- temperature range. The corrosion behaviour of pure Pb, Sb and Bi tellurides is investigated in this work through a spectroscopic approach. The samples are synthesized using a muffle furnace and then placed in 0.1 M...
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2016 (v1)PublicationUploaded on: April 14, 2023
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2021 (v1)Publication
Defect aggregates in doped ceria play a crucial role in blocking the movement of oxygen vacancies and hence in reducing ionic conductivity. Nevertheless, evaluation of their amount and the correlation between domain size and transport properties is still an open issue. Data derived from a high-pressure X-ray diffraction investigation performed...
Uploaded on: April 14, 2023 -
2019 (v1)Publication
Transport and structural properties of heavily doped ceria can reveal subtle details of the interplay between conductivity and defects aggregation in this material, widely studied as solid electrolyte in solid oxide fuel cells. The ionic conductivity of heavily Gd-doped ceria samples (Ce1−xGdxO2−x/2 with x ranging between 0.31 and 0.49) was...
Uploaded on: April 14, 2023 -
2018 (v1)Publication
Filled skutterudites are currently studied as thermoelectric materials to be used in the automotive and nautical field; the study of their resistance to a saline environment is therefore mandatory. To this purpose, the corrosion behavior of several compositions belonging to the Smy(FexNi1−x)4Sb12skutterudites system was investigated by...
Uploaded on: April 14, 2023 -
2017 (v1)Publication
A set of nine samples with nominal composition Ce0.5RE0.5O1.75 (RE ≡ Dy-Lu, Sm, Gd and Y) has been used to develop a novel method based on Raman spectroscopy, useful to evaluate the RE coordination number within the fluorite-type structure (F) of the CeO2-based solid solution. The RE coordination number is a crucial indicator of defects...
Uploaded on: April 14, 2023 -
2023 (v1)Publication
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Uploaded on: March 7, 2024 -
2021 (v1)Publication
An experimental investigation of the crystallographic, Raman and transport properties of the Ce1−x(Nd0.74Tm0.26)xO2−x/2 (0.1 ≤ x ≤ 0.6) doped ceria system was performed with the aim of setting out correlations between structural features and ionic conductivity of the material. The chosen composition ensures that the average size of the Nd3+ and...
Uploaded on: March 27, 2023 -
2022 (v1)Publication
The structural, microstructural, Raman and ionic conductivity properties of (Gd,Sm)-doped ceria were studied and compared to the ones of similar ceria systems with the aim of deepening the comprehension of the correlations between defect chemistry and movement of oxygen vacancies in such materials, which are ideal candidates as electrolytes in...
Uploaded on: December 2, 2022