Magnetocaloric effect in multilayers studied by membrane-based calorimetry

M. Kulyk; M. Persson; D. Polishchuk; V. Korenivski

doi:10.1088/1361-6463/aca67f

Magnetocaloric effect in multilayers studied by membrane-based calorimetry

Mesoscale and Nanoscale Physics 2022-12-21 v1

Authors: M. Kulyk , M. Persson , D. Polishchuk , V. Korenivski

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Abstract

We study magnetic multilayers, incorporating dilute ferromagnetic spacers between strongly-ferromagnetic layers exhibiting a proximity-enhanced magnetocaloric effect. Using magnetometry and direct measurements of the adiabatic temperature change based on a nanomembrane-calorimetry, we find that the magnetocaloric effect in the studied multilayer is indeed enhanced compared to that in the bulk spacer material. We develop a phenomenological numerical model of the studied trilayer and find that a long-range exchange interaction through the weakly-ferromagnetic spacer is required to adequately describe the magnetic and magnetocaloric properties of the system.

Keywords

magnetization magnetic nanoparticles magnetometer

Cite

@article{arxiv.2208.07761,
  title  = {Magnetocaloric effect in multilayers studied by membrane-based calorimetry},
  author = {M. Kulyk and M. Persson and D. Polishchuk and V. Korenivski},
  journal= {arXiv preprint arXiv:2208.07761},
  year   = {2022}
}