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Giant and reversible barocaloric effect in trinuclear spin-crossover complex Fe3(bntrz)6(tcnset)6
dc.contributor.author | Romanini, Michela |
dc.contributor.author | Lloveras Muntané, Pol Marcel |
dc.contributor.author | Barrio Casado, María del |
dc.contributor.author | Aznar Luque, Araceli |
dc.contributor.author | Gracia Condal, Adrià |
dc.contributor.author | Emre, Baris |
dc.contributor.author | Tamarit Mur, José Luis |
dc.contributor.author | Planes Vila, Antoni |
dc.contributor.author | Manosa, L |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada |
dc.date.accessioned | 2021-05-11T13:11:06Z |
dc.date.available | 2021-05-11T13:11:06Z |
dc.date.issued | 2021-03 |
dc.identifier.citation | Romanini, M. [et al.]. Giant and reversible barocaloric effect in trinuclear spin-crossover complex Fe3(bntrz)6(tcnset)6. "Advanced materials", Març 2021, vol. 33, núm. 10, p. 2008076:1-2008076:9. |
dc.identifier.issn | 0935-9648 |
dc.identifier.uri | http://hdl.handle.net/2117/345456 |
dc.description.abstract | A giant barocaloric effect (BCE) in a molecular material Fe3(bntrz)6(tcnset)6 (FBT) is reported, where bntrz = 4-(benzyl)-1,2,4-triazole and tcnset = 1,1,3,3-tetracyano-2-thioethylepropenide. The crystal structure of FBT contains a trinuclear transition metal complex that undergoes an abrupt spin-state switching between the state in which all three FeII centers are in the high-spin (S = 2) electronic configuration and the state in which all of them are in the low-spin (S = 0) configuration. Despite the strongly cooperative nature of the spin transition, it proceeds with a negligible hysteresis and a large volumetric change, suggesting that FBT should be a good candidate for producing a large BCE. Powder X-ray diffraction and calorimetry reveal that the material is highly susceptible to applied pressure, as the transition temperature spans the range from 318 at ambient pressure to 383 K at 2.6 kbar. Despite the large shift in the spin-transition temperature, its nonhysteretic character is maintained under applied pressure. Such behavior leads to a remarkably large and reversible BCE, characterized by an isothermal entropy change of 120 J kg-1 K-1 and an adiabatic temperature change of 35 K, which are among the highest reversible values reported for any caloric material thus far. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física::Física de l'estat sòlid |
dc.subject.lcsh | Solid state physics |
dc.title | Giant and reversible barocaloric effect in trinuclear spin-crossover complex Fe3(bntrz)6(tcnset)6 |
dc.type | Article |
dc.subject.lemac | Refrigerants |
dc.subject.lemac | Física de l'estat sòlid |
dc.contributor.group | Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials |
dc.identifier.doi | 10.1002/adma.202008076 |
dc.relation.publisherversion | https://doi.org/10.1002/adma.202008076 |
dc.rights.access | Open Access |
local.identifier.drac | 30818813 |
dc.description.version | Postprint (published version) |
local.citation.author | Romanini, M.; Lloveras, P.; Del Barrio, M.; Aznar, A.; Gracia-Condal, A.; Emre, B.; Tamarit, J. Ll.; Planes, A.; Manosa, L. |
local.citation.publicationName | Advanced materials |
local.citation.volume | 33 |
local.citation.number | 10 |
local.citation.startingPage | 2008076:1 |
local.citation.endingPage | 2008076:9 |
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