Giulia Lorusso, Mark Jenkins, Pablo González-Monje, Ana Arauzo, Javier Sesé, Daniel Ruiz-Molina, Olivier Roubeau and Marco Evangelisti Surface-Confined Molecular Coolers for Cryogenics Advanced Materials
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 microrefrigerating device at very low temperatures.
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