A5046630391- Rare-earth and actinide compounds
- Iron-based superconductors research
- Inorganic Chemistry and Materials
- Magnetic Properties of Alloys
- Crystallization and Solubility Studies
- Magnetic and transport properties of perovskites and related materials
- X-ray Diffraction in Crystallography
- Intermetallics and Advanced Alloy Properties
- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Quasicrystal Structures and Properties
- Catalytic Processes in Materials Science
- Synthesis and Biological Evaluation
- Semiconductor materials and interfaces
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Metallurgical and Alloy Processes
- Advanced Condensed Matter Physics
- Chemical Reaction Mechanisms
- Advanced Thermoelectric Materials and Devices
- Nuclear materials and radiation effects
- Heusler alloys: electronic and magnetic properties
- Nuclear Materials and Properties
- Synthesis and Reactions of Organic Compounds
- High-pressure geophysics and materials
- MXene and MAX Phase Materials
University of Genoa
2015-2024
Superconducting and other Innovative Materials and Devices Institute
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2002-2018
Lomonosov Moscow State University
2014-2015
National Interuniversity Consortium of Materials Science and Technology
2015
Tata Institute of Fundamental Research
2014
Industriale Chimica (Italy)
1998-2010
Kakatiya University
2009
Lviv University
2005
University of Geneva
2005
A structural study of Sm- and Gd-doped ceria was performed with the aim to clarify some unexplained features. (Ce1-xREx)O2-x/2 samples (RE ≡ Sm, Gd; x = 0, 0.1, ..., 1) were prepared by coprecipitation mixed oxalates subsequent thermal treatment at 1473, 1173, or 1073 K in air; they then analyzed room temperature both synchrotron X-ray diffraction μ-Raman spectroscopy. Two models adopted fit experimental data, namely, a fluoritic one, resembling CeO2 structure low RE content, hybrid one...
A room temperature structural study has been performed through the whole compositional range of (Ce1–xLux)O2–x/2 system by synchrotron X-ray diffraction and μ-Raman spectroscopy. Samples were synthesized thermal treatment in air at 1373 K coprecipitated mixed oxalates. CeO2-based solid solution with a fluorite-type structure (F) was found to be stable up x = 0.4, while higher Lu content (F + C) biphasic region observed, C being cubic atomic arrangement typical sesquioxides heaviest rare...
A small library of natural product-like compounds has been assembled by coupling an Ugi multicomponent reaction with two postcondensation transformations, carried out in one-pot fashion: a SN2′ cyclization followed intramolecular Heck reaction.
The crystallographic features of Gd-doped ceria were investigated at the operating temperature solid oxides fuel cells, where these materials are used as electrolytes. (Ce1–xGdx)O2-x/2 samples (x = 0.1, 0.3, 0.5, 0.7) prepared by coprecipitation mixed oxalates, treated 1473 K in air, and analyzed synchrotron X-ray diffraction range 673 ≤ T 1073 Elettra radiation facility located Trieste, Italy. In whole span a boundary was found x ∼ 0.2 between CeO2-based solution (for 0.2) structure Gd2O3...
The evolution of the defect structure and microstructure heavily Gd-doped ceria for different synthetic pathways is investigated to explore way defects interact with each other in a composition range known effectively hamper application material as electrolyte.
Sm-Doped ceria is one of the most promising materials to be used as electrolyte in solid oxide fuel cells due its remarkable ionic conductivity values intermediate temperature range. Transport properties and local structural features Ce1-xSmxO2-x/2 (0.1 ≤ x 0.7) were studied by an impedance/μ-Raman spectroscopy coupled approach up 1073 K. Results suggest that C-based nanosized defect clusters are responsible for drop observed even at = 0.2, i.e. a Sm content lower than necessary allow C...
In this work, the feasibility condition of Powder-In-Tube (PIT) processed wires Fe(Se,Te) superconductor has been investigated. We faced several technical issues that are extensively described and discussed. particular, we tested different metals alloys as external sheaths (Cu, Ag, Nb, Ta, Ni, Fe, cupronickel, brass) concluding only sheath does not affect substantially phase is Fe. On other hand, Fe introduces excess iron in phase, which affects superconducting properties; investigated...
In extreme temperature environments, a newly emerging engineering application involves both the active and passive control of structures using cryogenic shape memory alloys, which are smart materials able to recover high deformation below freezing point. With objective carrying out new advances in this area, present work aims investigate Cu-7.5Al-13.5Mn (wt.%) alloy. Thermal, microstructural, thermomechanical analyses as-cast hot-rolled specimens were performed, taking into account effects...
The structural, microstructural, Raman and ionic conductivity properties of (Gd,Sm)-doped ceria were studied compared to the ones similar systems with aim deepening comprehension correlations between defect chemistry movement oxygen vacancies in such materials, which are ideal candidates as electrolytes solid oxide cells. system was chosen it combines advantages using most effective doping ions for ceria, namely Sm3+ Gd3+, expected positive effects multiple doping. main effect double on...
A series of four homologous silicides have been discovered during systematic explorations in the central part La-Ni-Si system at 1000 °C. All compounds La12.5Ni28.0Si18.3 (n = 3; a 28.8686(8), c 4.0737(2) Å, Z 3), La22.1Ni39.0Si27.8 4; 20.9340(6), 4.1245(2) 1), La32.9Ni49.8Si39.3 5; 24.946(1), 4.1471(5) and La44.8Ni66.1Si53.4 6; 28.995(5), 4.158(1) 1) crystallize hexagonal space group P63/m can be generalized according to Lan(n+1)+xNin(n+5)+ySi(n+1)(n+2)-z with n 3-6. Their crystal...