magnetocaloric properties of a frustrated blume-capel antiferromagnet
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2014
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Abstract
Low-temperature magnetization processes and magnetocaloric properties of a geometrically frustrated spin-1 Blume-Capel model on a triangular lattice are studied by Monte Carlo simulations. The model is found to display qualitatively different behavior depending on the sign of the single-ion anisotropy D. For positive values of D we observe two magnetization plateaus, similar to the spin-1/2 Ising antiferromagnet, and negative isothermal entropy changes for any field intensity. For a range of small negative values of D there are four magnetization plateaus and the entropy changes can be either negative or positive, depending on the field. If D is negative but large in absolute value then the entropy changes are solely positive.
| Reference Key |
milan2014epjmagnetocaloric
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|---|---|
| Authors | ;Žukovič Milan;Bobák Andrej |
| Journal | utilitas mathematica |
| Year | 2014 |
| DOI |
10.1051/epjconf/20147509005
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| URL | |
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