Room-temperature barocaloric effect in [Fe(pap-5NO<sub>2</sub>)<sub>2</sub>] spin-crossover material
Gracia, David ; Cuartero, Vera (Universidad de Zaragoza) ; Popescu, Catalin ; Trapali, Adelais ; Mallah, Talal ; Boillot, Marie-Laure ; Blasco, Javier ; Subías, Gloria ; Evangelisti, Marco![Room-temperature barocaloric effect in [Fe(pap-5NO<sub>2</sub>)<sub>2</sub>] spin-crossover material](https://zaguan.unizar.es/record/160974/files/texto_completo.jpg?subformat=icon)
Resumen: We 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.
Idioma: Inglés
DOI: 10.1039/d5ta00033e
Año: 2025
Publicado en: Journal of Materials Chemistry A (2025), [8 pp.]
ISSN: 2050-7488
Financiación: info:eu-repo/grantAgreement/ES/UZ/JIUZ-2023-CIE-05
Financiación: info:eu-repo/grantAgreement/ES/DGA/E11-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2021-124734OB-C21
Tipo y forma: Article (Published version)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2025-10-17-14:13:08)
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Idioma: Inglés
DOI: 10.1039/d5ta00033e
Año: 2025
Publicado en: Journal of Materials Chemistry A (2025), [8 pp.]
ISSN: 2050-7488
Financiación: info:eu-repo/grantAgreement/ES/UZ/JIUZ-2023-CIE-05
Financiación: info:eu-repo/grantAgreement/ES/DGA/E11-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2021-124734OB-C21
Tipo y forma: Article (Published version)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2025-10-17-14:13:08)
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Articles > Artículos por área > Ciencia de los Materiales e Ingeniería Metalúrgica
Record created 2025-06-05, last modified 2025-10-17