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2017 | 131 | 4 | 645-647
Article title

Enhanced Magnetocaloric Effect due to Selective Dilution in a Triangular Ising Antiferromagnet

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EN
Abstracts
EN
We employ an effective-field theory with correlations in order to study a magnetocaloric effect on a triangular Ising antiferromagnet, which is selectively diluted by non-magnetic impurities on one of the three sublattices. Such a dilution generally relieves massive degeneracy in our system and therefore the ground-state entropy diminishes and the magnetocaloric effect weakens at low temperatures. However, at relatively higher temperatures we can observe significantly enhanced negative isothermal entropy changes for the sublattice concentration p_A=0.8.
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Contributors
author
  • Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia
author
  • Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia
References
  • [1] G.H. Wannier, Phys. Rev. 79, 357 (1950), doi: 10.1103/PhysRev.79.357
  • [2] M. Borovský, M. Žukovič, A. Bobák, Physica A 392, 157 (2013), doi: 10.1016/j.physa.2012.08.016
  • [3] M.E. Zhitomirsky, Phys. Rev. B 67, 104421 (2003), doi: 10.1103/PhysRevB.67.104421
  • [4] T. Kaneyoshi, Acta Phys. Pol. A 83, 703 (1993), doi: 10.12693/APhysPolA.83.703
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Publication order reference
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bwmeta1.element.bwnjournal-article-appv131n4011kz
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