Title variants
Languages of publication
Abstracts
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.
Discipline
- 75.50.Ee: Antiferromagnetics
- 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
- 05.10.Ln: Monte Carlo methods(see also 02.70.Tt, Uu in mathematical methods in physics; for Monte Carlo methods extensively used in subdivisions of physics, see the appropriate section; for example, see 52.65.Pp in plasma simulation)
- 05.50.+q: Lattice theory and statistics (Ising, Potts, etc.)(see also 64.60.Cn Order-disorder transformations, and 75.10.Hk Classical spin models)
Journal
Year
Volume
Issue
Pages
645-647
Physical description
Dates
published
2017-04
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
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n4011kz