The isothermal entropy change and the adiabatic temperature change for the exactly solved spin-1/2 Fisher's super-exchange antiferromagnet are rigorously calculated 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 Tc(h=0)<T<Tc(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.
@article{arxiv.1608.03426,
title = {Inverse magnetocaloric effect in the spin-1/2 Fisher's super-exchange antiferromagnet},
author = {Lucia Galisova and Jozef Strecka},
journal= {arXiv preprint arXiv:1608.03426},
year = {2023}
}
Comments
3 pages, 2 figures, presented at 16th Czech and Slovak Conference on Magnetism (CSMAG'16) in Kosice, Slovakia