Isothermal Entropy Change and Adiabatic Change of Temperature of the Antiferromagnetic Spin-1/2 Ising Octahedron and Dodecahedron

• Authors: K. Karľová , J. Strečka , T. Madaras
• Languages of publication: EN

Abstracts

EN

The spin-1/2 Ising octahedron and dodecahedron with a unique antiferromagnetic interaction display an outstanding magnetization jump at zero magnetic field, which consequently leads to a giant magnetocaloric effect during the adiabatic demagnetization. In the present work we report temperature dependences of two basic magnetocaloric response functions: the isothermal entropy change and the adiabatic change of temperature. It is shown that the Ising octahedron and dodecahedron generally exhibit a large negative isothermal entropy change upon increase of the magnetic field, which serves in evidence of their cooling performance.

Keywords

EN

75.30.Sg; 75.10.Hk; 75.50.Ee; 75.50.Xx

Discipline

• 75.10.Hk: Classical spin models
• 75.50.Ee: Antiferromagnetics
• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.50.Xx: Molecular magnets

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 630-632

Dates

published

2017-04

Contributors

author

K. Karľová

• Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

J. Strečka

• Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

T. Madaras

• Institute of Mathematics, Faculty of Science, P.J. Šafárik University, Jesenná 5, 040 01 Košice, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.131.630