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Low Magnetic Field Magnetocaloric Effect in \(\text {Gd}_{\mathrm {5-}_{x}}\)Eu x Ge 4

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Abstract

The magnetocaloric effect is investigated for \(\text {Gd}_{\mathrm {5-}_{x}}\)Eu x Ge4 (0.25 ≤ x ≤ 2) system near a phase transition from a ferromagnetic to a paramagnetic state as a function of temperature with low external magnetic field change of 100 Oe. The sample with x = 1 has the smallest value of maximum magnetic entropy change and the specific heat change, and highest values of full-width at half-maximum and relative cooling power. The results indicate that the \(\text {Gd}_{\mathrm {5-}_{x}}\)Eu x Ge4 system has a prospective application for magnetic refrigerant in an extended high temperature range. Consequently, \(\text {Gd}_{\mathrm {5-}_{x}}\)Eu x Ge4 compounds are very attractive candidates for magnetic refrigeration applications, especially nitrogen liquefier.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Tanta University, Tanta, Egypt

    Mahmoud A. Hamad

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  1. Mahmoud A. Hamad
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Correspondence to Mahmoud A. Hamad.

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Hamad, M.A. Low Magnetic Field Magnetocaloric Effect in \(\text {Gd}_{\mathrm {5-}_{x}}\)Eu x Ge 4 . J Supercond Nov Magn 29, 1539–1543 (2016). https://doi.org/10.1007/s10948-016-3445-y

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  • DOI: https://doi.org/10.1007/s10948-016-3445-y

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