On-surface magnetocaloric effect for a van der Waals Gd(iii) 2D MOF grown on Si

Kumar, Subodh ; Riera, Guillem Gabarró ; Arauzo, Ana (Universidad de Zaragoza) ; Hrubý, Jakub ; Hill, Stephen ; Bogani, Lapo ; Rubio-Zuazo, Juan ; Jover, Jesús ; Bartolomé, Elena ; Sañudo, E. Carolina

Resumen: Gd complexes have been studied as magnetic coolants due to their large magneto-caloric effect. In this work we present a Gd 2D metal–organic framework (MOF) of formula [Gd(MeCOO)(PhCOO)2] (1). We characterize the magnetic properties of 1, showing that it displays slow relaxation of the magnetization by ac susceptibility, and single-ion magnetic anisotropy using high-field EPR. By heat capacity and magnetization vs. field at various temperatures we determine the magnetic entropy change of compound 1. We then grow 1 on functionalized silicon, and show that the surface-deposited 2D MOF 1Si can be used as an on-surface magnetic cryogenic coolant.

Idioma: Inglés

DOI: 10.1039/d3ta06648g

Año: 2024

Publicado en: Journal of Materials Chemistry A 12, 11 (2024), 6269-6279
ISSN: 2050-7488

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E12-23R-RASMIA
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2018-098630-B-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-137764OB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)