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Magnetocaloric Effect in GdMn\({}_{\boldsymbol{1-x}}\)T\({}_{\boldsymbol{x}}\)Si (T \(\mathbf{=}\) Ti, Fe, Co) Compounds

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Abstract

Direct measurements of the magnetocaloric effect (MCE) and calculations of the change in the magnetic part of the entropy of a large group of GdMn\({}_{1-x}\)T\({}_{x}\)Si (T = Ti, Fe, Co) compounds with a CeFeSi-type structure have been conducted. All compounds are ordered ferro- or ferrimagnetically in a wide temperature range from 120 to 390 K. The peak MCE value (\(\Delta T_{\textrm{ad}}\approx 1.1\) K when the external magnetic field varies from 0 to 12 kOe) is observed for the GdFeSi compound. The resulting concentration dependences of Curie temperatures and MCE values are analyzed assuming that the magnetism of the 3\(d\) sublattice has a band character.

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Funding

This study was supported by the Russian Science Foundation, project no. 22-29-00773, https://rscf.ru/ project/22-29-00773/.

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Authors and Affiliations

  1. Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia

    S. A. Nikitin, I. A. Ovchenkova, M. E. Blinova & I. S. Tereshina

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  1. S. A. Nikitin
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  2. I. A. Ovchenkova
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  3. M. E. Blinova
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  4. I. S. Tereshina
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Correspondence to I. A. Ovchenkova.

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Translated by V. Arutyunyan

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Nikitin, S.A., Ovchenkova, I.A., Blinova, M.E. et al. Magnetocaloric Effect in GdMn\({}_{\boldsymbol{1-x}}\)T\({}_{\boldsymbol{x}}\)Si (T \(\mathbf{=}\) Ti, Fe, Co) Compounds. Moscow Univ. Phys. 77, 645–651 (2022). https://doi.org/10.3103/S0027134922040117

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