Tuesday, December 11, 2012

1212.1880 (Giulia Lorusso et al.)

Surface-confined molecular coolers for cryogenics    [PDF]

Giulia Lorusso, Mark Jenkins, Pablo Gonzalez-Monje, Ana Arauzo, Javier Sese, Daniel Ruiz-Molina, Olivier Roubeau, Marco Evangelisti
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 variable applied magnetic field near liquid-helium temperature, we demonstrate that the molecules hold intact their magnetic properties, and therefore their cooling functionality, after their deposition. Our result represents a step forward towards the realization of a molecule-based microrefrigerating device for very low temperatures.
View original: http://arxiv.org/abs/1212.1880

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