000160974 001__ 160974
000160974 005__ 20251017144556.0
000160974 0247_ $$2doi$$a10.1039/d5ta00033e
000160974 0248_ $$2sideral$$a144196
000160974 037__ $$aART-2025-144196
000160974 041__ $$aeng
000160974 100__ $$aGracia, David
000160974 245__ $$aRoom-temperature barocaloric effect in [Fe(pap-5NO<sub>2</sub>)<sub>2</sub>] spin-crossover material
000160974 260__ $$c2025
000160974 5060_ $$aAccess copy available to the general public$$fUnrestricted
000160974 5203_ $$aWe examine the pressure dependence of the spin-crossover transition in [Fe(pap-5NO2)2] that occurs near room temperature. We employ a combination of high-pressure calorimetry and powder X-ray diffraction measurements, conducted both under variable-pressure and variable-temperature conditions. Both methods indicate that the spin-crossover transition shifts linearly to higher temperatures with increasing pressure, while simultaneously exhibiting an increase in the width of the thermal hysteresis. We report a giant barocaloric effect, revealing isothermal entropy changes in the 70–79 J kg−1 K−1 range and adiabatic temperature changes between 20 and 26 K for a pressure change of 2.0 kbar. Although the effect diminishes under reversible conditions, it remains substantial, with values of 70 J kg−1 K−1 and 14 K, respectively.
000160974 536__ $$9info:eu-repo/grantAgreement/ES/UZ/JIUZ-2023-CIE-05$$9info:eu-repo/grantAgreement/ES/DGA/E11-23R$$9info:eu-repo/grantAgreement/ES/DGA/E12-23R$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICIU/PID2021-124734OB-C21
000160974 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000160974 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000160974 700__ $$0(orcid)0000-0002-8021-8709$$aCuartero, Vera$$uUniversidad de Zaragoza
000160974 700__ $$aPopescu, Catalin
000160974 700__ $$aTrapali, Adelais
000160974 700__ $$aMallah, Talal
000160974 700__ $$aBoillot, Marie-Laure
000160974 700__ $$0(orcid)0000-0002-9706-3272$$aBlasco, Javier
000160974 700__ $$0(orcid)0000-0002-9029-1977$$aSubías, Gloria
000160974 700__ $$0(orcid)0000-0002-8028-9064$$aEvangelisti, Marco
000160974 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000160974 773__ $$g(2025), [8 pp.]$$pJ. mater. chem. A$$tJournal of Materials Chemistry A$$x2050-7488
000160974 8564_ $$s1517441$$uhttps://zaguan.unizar.es/record/160974/files/texto_completo.pdf$$yVersión publicada
000160974 8564_ $$s2709582$$uhttps://zaguan.unizar.es/record/160974/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000160974 909CO $$ooai:zaguan.unizar.es:160974$$particulos$$pdriver
000160974 951__ $$a2025-10-17-14:13:08
000160974 980__ $$aARTICLE