Room-temperature large refrigerant capacity of Gd6 Co 2 Si3

Jun Shen; Jian Feng Wu; Ji Rong Sun

doi:10.1063/1.3243289

Room-temperature large refrigerant capacity of Gd₆ Co ₂ Si₃

Jun Shen^*, Jian Feng Wu, Ji Rong Sun

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

The magnetic properties and magnetocaloric effects of the Gd₆ Co₂ Si₃ alloy are investigated. Gd₆ Co ₂ Si₃ undergoes a reversible second-order magnetic transition with a Curie temperature at room temperature (T_C =295 K). A broad distribution of the magnetic entropy change Δ S_m peak is observed, and the full width at half maximum of the Δ S_m peak is found to be about 111 K under a magnetic field of 5 T. The large value of the refrigerant capacity (RC) is found to be comparable with those of pure Gd, which have maximal RC values for all the magnetocaloric materials reported previously. The maximal value of Δ S_m is 6.3 J/kg K for a field change of 0-5 T. Excellent magnetocaloric properties, especially considerable values of RC, indicate the applicability of Gd₆ Co₂ Si₃ for magnetic refrigeration in the room-temperature range.

Original language	English
Article number	083902
Journal	Journal of Applied Physics
Volume	106
Issue number	8
DOIs	https://doi.org/10.1063/1.3243289
Publication status	Published - 2009
Externally published	Yes

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abstract = "The magnetic properties and magnetocaloric effects of the Gd6 Co2 Si3 alloy are investigated. Gd6 Co 2 Si3 undergoes a reversible second-order magnetic transition with a Curie temperature at room temperature (TC =295 K). A broad distribution of the magnetic entropy change Δ Sm peak is observed, and the full width at half maximum of the Δ Sm peak is found to be about 111 K under a magnetic field of 5 T. The large value of the refrigerant capacity (RC) is found to be comparable with those of pure Gd, which have maximal RC values for all the magnetocaloric materials reported previously. The maximal value of Δ Sm is 6.3 J/kg K for a field change of 0-5 T. Excellent magnetocaloric properties, especially considerable values of RC, indicate the applicability of Gd6 Co2 Si3 for magnetic refrigeration in the room-temperature range.",

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AU - Shen, Jun

AU - Wu, Jian Feng

AU - Sun, Ji Rong

PY - 2009

Y1 - 2009

N2 - The magnetic properties and magnetocaloric effects of the Gd6 Co2 Si3 alloy are investigated. Gd6 Co 2 Si3 undergoes a reversible second-order magnetic transition with a Curie temperature at room temperature (TC =295 K). A broad distribution of the magnetic entropy change Δ Sm peak is observed, and the full width at half maximum of the Δ Sm peak is found to be about 111 K under a magnetic field of 5 T. The large value of the refrigerant capacity (RC) is found to be comparable with those of pure Gd, which have maximal RC values for all the magnetocaloric materials reported previously. The maximal value of Δ Sm is 6.3 J/kg K for a field change of 0-5 T. Excellent magnetocaloric properties, especially considerable values of RC, indicate the applicability of Gd6 Co2 Si3 for magnetic refrigeration in the room-temperature range.

AB - The magnetic properties and magnetocaloric effects of the Gd6 Co2 Si3 alloy are investigated. Gd6 Co 2 Si3 undergoes a reversible second-order magnetic transition with a Curie temperature at room temperature (TC =295 K). A broad distribution of the magnetic entropy change Δ Sm peak is observed, and the full width at half maximum of the Δ Sm peak is found to be about 111 K under a magnetic field of 5 T. The large value of the refrigerant capacity (RC) is found to be comparable with those of pure Gd, which have maximal RC values for all the magnetocaloric materials reported previously. The maximal value of Δ Sm is 6.3 J/kg K for a field change of 0-5 T. Excellent magnetocaloric properties, especially considerable values of RC, indicate the applicability of Gd6 Co2 Si3 for magnetic refrigeration in the room-temperature range.

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Room-temperature large refrigerant capacity of Gd₆ Co ₂ Si₃

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