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Large magnetocaloric effect in RE8Pd24Ga (RE = Gd, Tb and Dy) series of compounds

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Strydom,  A. M.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Mboukam, J. J., Tchoula Tchokonté, M. B., Bashir, A. K. H., Sondezi, B. M., Sahu, B. N., Strydom, A. M., et al. (2020). Large magnetocaloric effect in RE8Pd24Ga (RE = Gd, Tb and Dy) series of compounds. Journal of Alloys and Compounds, 814: 152228, pp. 1-9. doi:10.1016/j.jallcom.2019.152228.


Cite as: http://hdl.handle.net/21.11116/0000-0004-C863-B
Abstract
We report on the low-temperature physical properties of RE8Pd24Ga (RE = Gd, Tb and Dy) compounds studied by means of thermodynamic and electronic transport measurements. The three compounds exhibit a putative antiferromagnetic ordering. In the paramagnetic region, their magnetic susceptibility follows the Curie-Weiss relation with effective magnetic moments close to those expected for the respective RE3+ ions. Gd8Pd24Ga and Dy8Pd24Ga undergo another magnetic phase transitions in the ordered state. In fairly small magnetic fields, the magnetization of Tb8Pd24Ga and Dy8Pd24Ga reveals a metamagnetic-like transition that bears a first-order character. All three compounds studied exhibit magnetocaloric effect of the magnitude similar to those reported for materials applicable as magnetic refrigerants. © 2019 Elsevier B.V.