Rotational magnetocaloric effect of anisotropic giant-spin molecular magnets

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:482

Article

Beckmann, Christian¹  Ehrens, Julian¹  Schnack, Juergen¹ 

[1] Bielefeld Univ, Dept Phys, POB 100131, D-33501 Bielefeld, Germany

关键词: Molecular magnetism;    Giant-spin model;    Magnetocalorics;   

DOI  :  10.1016/j.jmmm.2019.02.064

来源: Elsevier

【 摘 要 】

The magnetocaloric effect, that consists of adiabatic temperature changes in a varying external magnetic field, appears not only when the amplitude is changed, but in cases of anisotropic magnetic materials also when the direction is varied. In this article we investigate the magnetocaloric effect theoretically for the archetypical single molecule magnets Fe-8 and Mn-12 that are rotated with respect to a magnetic field. We complement our calculations for equilibrium situations with investigations of the influence of non-equilibrium thermodynamic cycles.

【 授权许可】

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