Tuning the magnetic entropy change of Ni50-x Mn35+x In15 alloys by varying the Mn content

B. Gao; F. X. Hu; J. Shen; J. Wang; J. R. Sun; B. G. Shen

doi:10.1063/1.3098229

Tuning the magnetic entropy change of Ni_50-x Mn_35+x In₁₅ alloys by varying the Mn content

B. Gao, F. X. Hu, J. Shen, J. Wang, J. R. Sun, B. G. Shen

CAS - Institute of Physics

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

17 Citations (Scopus)

Abstract

Magnetocaloric effect associated with the first-order martensitic transition (TM) is investigated in polycrystalline Ni_50-x Mn _35+x In₁₅ alloys with varying Mn content but fixing In content. It is found that when Mn content reaches x=3, a field-induced metamagnetic transition takes place. An external magnetic field can reduce T_M to a lower temperature at a rate of 3.5 K/T, thereby yielding a large magnetic entropy change ΔS near room temperature. The ΔS magnitude attains to 33 J/kg K under a magnetic field of 5 T at 285 K for the sample with x=3, while the temperature span of the ΔS peak can reach 15 K because of the reduction in TM by the external magnetic field. The calculated refrigerant capacity reaches 279 J/kg for the sample with x=3. These values of the magnetocaloric parameters suggest that these alloys are suitable candidates for magnetic refrigerants.

Original language	English
Article number	083902
Journal	Journal of Applied Physics
Volume	105
Issue number	8
DOIs	https://doi.org/10.1063/1.3098229
Publication status	Published - 2009
Externally published	Yes

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Gao, B., Hu, F. X., Shen, J., Wang, J., Sun, J. R., & Shen, B. G. (2009). Tuning the magnetic entropy change of Ni_50-x Mn_35+x In₁₅ alloys by varying the Mn content. Journal of Applied Physics, 105(8), Article 083902. https://doi.org/10.1063/1.3098229

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abstract = "Magnetocaloric effect associated with the first-order martensitic transition (TM) is investigated in polycrystalline Ni50-x Mn 35+x In15 alloys with varying Mn content but fixing In content. It is found that when Mn content reaches x=3, a field-induced metamagnetic transition takes place. An external magnetic field can reduce TM to a lower temperature at a rate of 3.5 K/T, thereby yielding a large magnetic entropy change ΔS near room temperature. The ΔS magnitude attains to 33 J/kg K under a magnetic field of 5 T at 285 K for the sample with x=3, while the temperature span of the ΔS peak can reach 15 K because of the reduction in TM by the external magnetic field. The calculated refrigerant capacity reaches 279 J/kg for the sample with x=3. These values of the magnetocaloric parameters suggest that these alloys are suitable candidates for magnetic refrigerants.",

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AU - Gao, B.

AU - Hu, F. X.

AU - Shen, J.

AU - Wang, J.

AU - Sun, J. R.

AU - Shen, B. G.

PY - 2009

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N2 - Magnetocaloric effect associated with the first-order martensitic transition (TM) is investigated in polycrystalline Ni50-x Mn 35+x In15 alloys with varying Mn content but fixing In content. It is found that when Mn content reaches x=3, a field-induced metamagnetic transition takes place. An external magnetic field can reduce TM to a lower temperature at a rate of 3.5 K/T, thereby yielding a large magnetic entropy change ΔS near room temperature. The ΔS magnitude attains to 33 J/kg K under a magnetic field of 5 T at 285 K for the sample with x=3, while the temperature span of the ΔS peak can reach 15 K because of the reduction in TM by the external magnetic field. The calculated refrigerant capacity reaches 279 J/kg for the sample with x=3. These values of the magnetocaloric parameters suggest that these alloys are suitable candidates for magnetic refrigerants.

AB - Magnetocaloric effect associated with the first-order martensitic transition (TM) is investigated in polycrystalline Ni50-x Mn 35+x In15 alloys with varying Mn content but fixing In content. It is found that when Mn content reaches x=3, a field-induced metamagnetic transition takes place. An external magnetic field can reduce TM to a lower temperature at a rate of 3.5 K/T, thereby yielding a large magnetic entropy change ΔS near room temperature. The ΔS magnitude attains to 33 J/kg K under a magnetic field of 5 T at 285 K for the sample with x=3, while the temperature span of the ΔS peak can reach 15 K because of the reduction in TM by the external magnetic field. The calculated refrigerant capacity reaches 279 J/kg for the sample with x=3. These values of the magnetocaloric parameters suggest that these alloys are suitable candidates for magnetic refrigerants.

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Tuning the magnetic entropy change of Ni_50-x Mn_35+x In₁₅ alloys by varying the Mn content

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