Gd Metal–Organic Framework Thin Film for On-Chip Local Magnetic Refrigeration

Tejedor, Inés (Universidad de Zaragoza) ; Kravchenko, Dmitry E. ; Gandara-Loe, Jesús ; Ameloot, Rob ; Gascón, Ignacio (Universidad de Zaragoza) ; Roubeau, Olivier

Resumen: Dense metal–organic frameworks with high spin paramagnetic nodes are competitive materials for cryogenic magnetic refrigeration, particularly in applications for which local cooling is advantageous. We focus on obtaining thin films of gadolinium formate, which has a large volumetric magnetocaloric effect. Continuous and homogeneous deposits of gadolinium formate are successfully formed on silicon by means of aerosol jet printing, with control over the film thickness from 0.35 μm up to 2.5 μm. The excellent cooling power of the deposits is evidenced via direct measurements of the cooling of a 200 μm silicon wafer down to sub-K temperatures by a single demagnetization from 1 T and 2 K, thereby demonstrating the potential of this approach for on-chip local magnetic refrigeration.

Idioma: Inglés

DOI: 10.1021/acs.chemmater.4c00909

Año: 2024

Publicado en: Chemistry of materials 36, 17 (2024), 8239–8246
ISSN: 0897-4756

Financiación: info:eu-repo/grantAgreement/ES/DGA/E31-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-105881RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-1183294RB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Física (Dpto. Química Física)