Zobrazeno 1 - 10 of 17 pro vyhledávání: '"Marco Piazzi"'
1
Magnetization instabilities due to spin Hall effect described by a nonequilibrium thermodynamic approach
Autor: Patrizio Ansalone, Marco Piazzi, Vittorio Basso
Publikováno v: Physica B: Condensed Matter. 549:10-12
Magnetization instabilities in an insulating ferromagnet can be induced because of the spin Hall effect in a metallic side layer. In this paper we present a nonequilibrium thermodynamic approach to jointly describe magnetization dynamics and magnetic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e0e6125b870da61de09b6f301c0fded
https://doi.org/10.1016/j.physb.2017.09.042
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2
Magnetocaloric effect at the exchange–inversion with magnetoelastic coupling
Autor: Marco Piazzi, Vittorio Basso
Publikováno v: Physica B: Condensed Matter. 473:26-34
We develop a thermodynamic model to describe antiferro- (AFM) to ferromagnetic (FM) phase transitions through magnetoelastic coupling in the framework of Kittel's exchange–inversion mechanism. By including both magnetic and structural contributions
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3c85b348d5acb4526b90e69a81c220d
https://doi.org/10.1016/j.physb.2015.05.025
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3
Ab-initio Based Analytical Evaluation of Entropy in Magnetocaloric Materials with First Order Phase Transitions
Autor: Vittorio Basso, Marco Piazzi, Jan Zemen
Publikováno v: Physics Procedia. 75:1332-1344
We combine spin polarised density functional theory and thermodynamic mean field theory to describe the phase transitions of antiperovskite manganese nitrides. We find that the inclusion of the localized spin contribution to the entropy, evaluated th
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4
Thermodynamics of the Heat-Flux Avalanches at the First-Order Magnetic Transition in Magnetocaloric Materials
Autor: Vittorio Basso, Cecilia Bennati, Marco Piazzi
Publikováno v: Physical Review Applied 8 (2017): 044023-1. doi:10.1103/PhysRevApplied.8.044023
info:cnr-pdr/source/autori:Piazzi M.; Bennati C.; Basso V./titolo:Thermodynamics of the Heat-Flux Avalanches at the First-Order Magnetic Transition in Magnetocaloric Materials/doi:10.1103%2FPhysRevApplied.8.044023/rivista:Physical Review Applied/anno:2017/pagina_da:044023-1/pagina_a:/intervallo_pagine:044023-1/volume:8
We investigate the kinetics of first-order magnetic phase transitions by measuring and modeling the heat-flux avalanches corresponding to the irreversible motion of the phase-boundary interface separating the coexisting low- and high-temperature stab
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eca1fac8951deb8f94b8f97b271e127
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.8.044023
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5
Multi-analytical characterization of Fe-rich magnetic inclusions in diamonds
Autor: Marco Coïsson, Marcello Campione, Enzo Ferrara, Marta Morana, Marco Piazzi, Adrian P. Jones, Matteo Alvaro, Federica Marone, Luca Bindi
Publikováno v: Diamond and Related Materials
Magnetic mineral inclusions, as iron oxides or sulfides, occur quite rarely in natural diamonds. Nonetheless, they represent a key tool not only to unveil the conditions of formation of host diamonds, but also to get hints about the paleointensity of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05fb05231004b07b392a030199e18a68
https://doi.org/10.1016/j.diamond.2019.107489
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7
Thermodynamic transport theory of spin waves in ferromagnetic insulators
Autor: Elena Ferraro, Vittorio Basso, Marco Piazzi
Publikováno v: Physical Review B 94 (2016). doi:10.1103/PhysRevB.94.144422
info:cnr-pdr/source/autori:Basso, Vittorio; Ferraro, Elena; Piazzi, Marco/titolo:Thermodynamic transport theory of spin waves in ferromagnetic insulators/doi:10.1103%2FPhysRevB.94.144422/rivista:Physical Review B/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume:94
We use the Boltzmann transport theory in the relaxation time approximation to describe the thermal transport of spin waves in a ferromagnet. By treating spin waves as magnon excitations we are able to compute analytically and numerically the coeffici
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22f2bd2b504c0e8b19868455bf08da12
https://doi.org/10.1103/physrevb.94.144422
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8
Modeling specific heat and entropy change in La(Fe–Mn–Si)13–H compounds
Autor: Vittorio Basso, Carmen Curcio, Michaela Kuepferling, Cecilia Bennati, Marco Piazzi
In this paper we model the magnetocaloric effect of LaFe x Mn y Si z –H 1.65 compound ( x + y + z = 13 ), a system showing a transition temperature finely tunable around room temperature by Mn substitution. The thermodynamic model takes into accoun
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::878bbb717dbc09a4aa1378bec07da67c
http://hdl.handle.net/11583/2625108
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10
Hysteresis and Phase Transition Kinetics in Magnetocaloric Materials
Autor: Cecilia Bennati, Vittorio Basso, Carmen Curcio, Marco Piazzi
Publikováno v: Physica status solidi. B, Basic research (Internet) 255 (2018): 1700278-1. doi:10.1002/pssb.201700278
info:cnr-pdr/source/autori:Basso V.; Piazzi M.; Bennati C.; Curcio C./titolo:Hysteresis and Phase Transition Kinetics in Magnetocaloric Materials/doi:10.1002%2Fpssb.201700278/rivista:Physica status solidi. B, Basic research (Internet)/anno:2018/pagina_da:1700278-1/pagina_a:/intervallo_pagine:1700278-1/volume:255
In the present paper, we review the recent research on the physics of magnetocaloric materials aiming to define a coherent theoretical framework in which hysteresis and kinetic effects can be appropriately discussed and interpreted in relation to int
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb3a1a99e3cb5255c434feef22ff8a71
https://doi.org/10.1002/pssb.201700278
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