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 pA=0.8.
@article{arxiv.1703.05651,
title = {Enhanced magnetocaloric effect due to selective dilution in a triangular Ising antiferromagnet},
author = {Michal Borovský and Milan Žukovič},
journal= {arXiv preprint arXiv:1703.05651},
year = {2023}
}