Surface-Confined Molecular Coolers for Cryogenics

An excellent molecule‐based cryogenic magnetic refrigerant, gadolinium acetate tetrahydrate, is here used to decorate selected portions of silicon substrate. By quantitative magnetic force microscopy for a variable applied magnetic field near liquid‐helium temperature, the molecules are demonstrated...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2013-06, Vol.25 (21), p.2984-2988
Main Authors: Lorusso, Giulia, Jenkins, Mark, González-Monje, Pablo, Arauzo, Ana, Sesé, Javier, Ruiz-Molina, Daniel, Roubeau, Olivier, Evangelisti, Marco
Format: Article
Language:English
Subjects:
Cryogenics
Deposition
Devices
dip-pen nanolithography
Gadolinium
Magnetic fields
magnetic force microscopy
Magnetic properties
magnetocaloric effect
Microscopy
molecular nanomagnets
Silicon substrates
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Summary:An excellent molecule‐based cryogenic magnetic refrigerant, gadolinium acetate tetrahydrate, is here used to decorate selected portions of silicon substrate. By quantitative magnetic force microscopy for a variable applied magnetic field near liquid‐helium temperature, the molecules are demonstrated to hold their magnetic properties intact, and therefore their cooling functionality, after their deposition. These results represent a step forward towards the realization of a molecule‐based micro‐refrigerating device at very low temperatures.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201204863