Rotational magnetocaloric effect of anisotropic giant spin systems

Abstract

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 Fe8 and Mn12 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.

arXiv comment17 pages, 8 figures

References in corpus (11)

• Magnetothermal properties of molecule-based materials
• Magnetocaloric materials: the search for new systems
• Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
• Giant and time-dependent magnetocaloric effect in high-spin molecular magnets
• Anisotropic magnetic properties and giant rotating magnetocaloric effect in double-perovskite Tb2CoMnO6
• NMR as a probe of the relaxation of the magnetization in magnetic molecules
• Butterfly hysteresis loop at non-zero bias field in antiferromagnetic molecular rings: cooling by adiabatic magnetization
• Magnetic Exchange Interactions in the Molecular Nanomagnet Mn${}_{12}$
• Towards Microscopic Understanding of the Phonon Bottleneck
• Comment on "Theoretical design of molecular nanomagnets for magnetic refrigeration" [Appl. Phys. Lett. 103, 202410 (2013)]
• Investigation of thermalization in giant-spin models by different Lindblad schemes

Cited by in corpus (5)

• Magnetocaloric effect in molecular spin clusters and their assemblies: model exact and Monte Carlo studies
• Magnetization plateaus and enhanced magnetocaloric effect of a spin-1/2 Ising-Heisenberg and Heisenberg double sawtooth ladder with four-spin interaction
• Enhanced magnetocaloric effect in a mixed spin-(1/2, 1) Ising-Heisenberg two-leg ladder with strong-rung interaction
• Insight into magnetocaloric properties of Mn2Nb molecular magnet by relaxation calorimetry: A comprehensive case study
• Theoretical investigations of tetrameric magnetic molecules for sub-kelvin cooling