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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202008076
|2 doi
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|a pubmed24n1069.xml
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|a (DE-627)NLM320885607
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|a (NLM)33527567
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|a DE-627
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|a eng
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|a Romanini, Michela
|e verfasserin
|4 aut
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|a Giant and Reversible Barocaloric Effect in Trinuclear Spin-Crossover Complex Fe3 (bntrz)6 (tcnset)6
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|c 2021
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 10.03.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a 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
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|a Journal Article
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|a Review
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|a barocaloric
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|a mechanocaloric
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|a spin crossover
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|a Wang, YiXu
|e verfasserin
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|a Gürpinar, Kübra
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|a Ornelas, Gladys
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|a Lloveras, Pol
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|a Zhang, Yan
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|a Zheng, Wenkai
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|4 aut
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|a Barrio, Maria
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|4 aut
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|a Aznar, Araceli
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|a Gràcia-Condal, Adrià
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|a Emre, Baris
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|a Atakol, Orhan
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|a Popescu, Catalin
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|a Zhang, Hu
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|a Long, Yi
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|a Balicas, Luis
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|a Lluís Tamarit, Josep
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|a Planes, Antoni
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|a Shatruk, Michael
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|a Mañosa, Lluís
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 10 vom: 06. März, Seite e2008076
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:33
|g year:2021
|g number:10
|g day:06
|g month:03
|g pages:e2008076
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|u http://dx.doi.org/10.1002/adma.202008076
|3 Volltext
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