Giant and time-dependent magnetocaloric effect in high-spin molecular magnets

Details Giant and time-dependent magnetocaloric effect in high-spin molecular magnets Giant and time-dependent magnetocaloric effect in high-spin molecular magnets

2000-11-22

arxiv.org/abs/cond-mat/0011384v1

Appl. Phys. Lett. 77 (2000) 3248-3250

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 3 figures

Scientific paper

10.1063/1.1325393

We have measured and calculated the magnetocaloric effect in macroscopic samples of oriented high-spin molecular clusters like Mn12 and Fe8 as a function of the temperature and both the intensity and the sweeping rate of the applied magnetic field. We have observed a high magnetic entropy variation around the blocking temperature of the magnetic moment of molecules and calculated the shift of the entropy variation and cooling temperature, with the sweeping rate of the magnetic field.

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