Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Francesco Congiu"'
Strong Anharmonicity at the Origin of Anomalous Thermal Conductivity in Double Perovskite Cs2NaYbCl6
Autor:
Antonio Cappai, Claudio Melis, Daniela Marongiu, Francesco Quochi, Michele Saba, Francesco Congiu, Yihui He, Tyler J. Slade, Mercouri G. Kanatzidis, Luciano Colombo
Publikováno v:
Advanced Science, Vol 11, Iss 9, Pp n/a-n/a (2024)
Abstract Anomalous thermal transport of Cs2NaYbCl6 double‐halide perovskite above room temperature is reported and rationalized. Calculations of phonon dispersion relations and scattering rates up to the fourth order in lattice anharmonicity have b
Externí odkaz:
https://doaj.org/article/6df51950c6dc41b89d037e71b73d54c3
Autor:
Giuseppe Muscas, Francesco Congiu, Giorgio Concas, Carla Cannas, Valentina Mameli, Nader Yaacoub, Rodaina Sayed Hassan, Dino Fiorani, Sawssen Slimani, Davide Peddis
Publikováno v:
Nanoscale Research Letters, Vol 17, Iss 1, Pp 1-13 (2022)
Abstract Despite modern preparation techniques offer the opportunity to tailor the composition, size, and shape of magnetic nanoparticles, understanding and hence controlling the magnetic properties of such entities remains a challenging task, due to
Externí odkaz:
https://doaj.org/article/1d5192289a624fb891be9c14b76ad22b
Publikováno v:
Fluids, Vol 7, Iss 12, p 372 (2022)
On the basis of previous experimental and numerical studies, the windage operation of low-pressure turbine rear stage is investigated. The state of the steam within the rotor channel was correlated to measurements carried out downstream of the blades
Externí odkaz:
https://doaj.org/article/119e94890bd542bd8a62a3bca5132e20
Autor:
Alessandra Geddo Lehmann, Giuseppe Muscas, Maurizio Ferretti, Emanuela Pusceddu, Davide Peddis, Francesco Congiu
Publikováno v:
Applied Sciences, Vol 12, Iss 2, p 695 (2022)
We investigated the structural and magnetic properties of 20 nm-sized nanoparticles of the half-doped manganite Ho0.5Ca0.5MnO3 prepared by sol-gel approach. Neutron powder diffraction patterns show Pbnm orthorhombic symmetry for 10 K < T < 290 K, wit
Externí odkaz:
https://doaj.org/article/9eedbb0d04f343af99f6ca8b5a427d66
Autor:
Francesco Congiu, E. Dhahri, Nader Yaacoub, Giorgio Concas, Sawssen Slimani, Giuseppe Muscas, Gianni Barucca, Alessandro Talone, Davide Peddis, M. Smari
Publikováno v:
The Journal of Physical Chemistry C. 125:10611-10620
When preparing nanostructured magnetic materials, the presence of an amorphous component is often considered a weakness of the synthesis method and a waste of material. This stems because the amorp...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::971684853437558aff0541c80275f2fe
https://doi.org/10.1021/acs.jpcc.1c00797
https://doi.org/10.1021/acs.jpcc.1c00797
Autor:
Giovanni Bongiovanni, Francesco Congiu, Valerio Sarritzu, Alessandra Geddo Lehmann, Alessandro Mattoni, Francesco Quochi, Guido Pegna, Alessio Filippetti, Andrea Mura, Daniela Marongiu, Michele Saba
Publikováno v:
Physical Chemistry Chemical Physics. 23:3233-3245
Hybrid lead halides CH3NH3PbX3 (X = I, Br, and Cl) have emerged as a new class of semiconductors for low-cost optoelectronic devices with superior performance. Since their perovskite crystal structure may have lattice instabilities against polar dist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adf3f62ac167d25b8fc8c19292591036
https://doi.org/10.1039/d0cp05918h
https://doi.org/10.1039/d0cp05918h
Magnetic double perovskite oxides have steadily emerged as an important class of functional materials. A clear understanding of the complex interactions that govern the magnetic behavior, and thereby, the functionality in these mixed valence compound
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d296b9f32d5925573166e1a12ed0568f
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-473768
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-473768
The continuous increase of variable renewable energy and fuel cost requires steam turbine power plants to operate with high flexibility. Furthermore, the reduction in electricity price is forcing many existing and new district heating power plants to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ba7e53cdcc8fb2c32714de2b710ed19
https://doi.org/10.1115/1.0000567v
https://doi.org/10.1115/1.0000567v
Publikováno v:
Applied Thermal Engineering. 150:937-952
Flow field and temperature distribution at last stage moving blades outlet for freestanding and snubber blades have been investigated experimentally and numerically. The same airfoil geometry of a steam turbine last stage blades, with and without snu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f2a419f133b6768996919aa82f3e432
https://doi.org/10.1016/j.applthermaleng.2019.01.032
https://doi.org/10.1016/j.applthermaleng.2019.01.032
Autor:
Alessandra Geddo, Lehmann, Francesco, Congiu, Daniela, Marongiu, Andrea, Mura, Alessio, Filippetti, Alessandro, Mattoni, Michele, Saba, Guido, Pegna, Valerio, Sarritzu, Francesco, Quochi, Giovanni, Bongiovanni
Publikováno v:
Physical chemistry chemical physics : PCCP. 23(5)
Hybrid lead halides CH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::07b6ffc857ab86ee0b399568bf1e6ff3
https://pubmed.ncbi.nlm.nih.gov/33465210
https://pubmed.ncbi.nlm.nih.gov/33465210