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2017 | 131 | 4 | 627-629
Article title

Inverse Magnetocaloric Effect in Spin-1/2 Fisher's Super-Exchange Antiferromagnet

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Abstracts
EN
The isothermal entropy change and the adiabatic temperature change are rigorously calculated for the exactly solved spin-1/2 Fisher's super-exchange antiferromagnet in order to examine magnetocaloric properties of the model in a vicinity of the second-order phase transition. It is shown that the large inverse magnetocaloric effect occurs around the temperature interval T_c(h≠0) < T < T_c(h=0) for any magnetic-field change Δh:0 → h. The most pronounced inverse magnetocaloric effect can be found for the magnetic-field change, which coincides with the critical field of a zero-temperature phase transition from the antiferromagnetically ordered ground state to the paramagnetic one.
Keywords
Contributors
author
  • Department of Applied Mathematics and Informatics, Faculty of Mechanical Engineering, Technical University, Letná 9, 042 00 Košice, Slovakia
author
  • Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia
References
  • [1] A.M. Tishin, Y.I. Spichkin, The Magnetocaloric Effect and Its Applications, IOP Pub., Bristol 2003, doi: 10.1016/S1369-7021(03)01134-9
  • [2] L. Gálisová, J. Strečka, Phys. Lett. A 379, 2474 (2015), doi: 10.1016/j.physleta.2015.07.007
  • [3] Y. Hu, A. Du, J. Phys. Condens. Matter 20, 125225 (2008), doi: 10.1088/0953-8984/20/12/125225
  • [4] M.E. Fisher, Proc. R. Soc. Lond. A 254, 66 (1960), doi: 10.1098/rspa.1960.0005
  • [5] M.E. Fisher, Proc. R. Soc. Lond. A 256, 502 (1960), doi: 10.1098/rspa.1960.0122
Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n4005kz
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