Enhancements of magnetocaloric effects in La(Fe0.90Si 0.10)13 and its hydride by partial substitution of Ce for La

Shun Fujieda; Asaya Fujita; Kazuaki Fukamichi

doi:10.2320/matertrans.45.3228

Enhancements of magnetocaloric effects in La(Fe_0.90Si _0.10)₁₃ and its hydride by partial substitution of Ce for La

Shun Fujieda, Asaya Fujita, Kazuaki Fukamichi

Division of Inorganic Material Research

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

38 Citations (Scopus)

Abstract

Magnetocaloric effects due to the itinerant-electron metamagnetic transition for La(Fe_0.90Si_0.10)₁₃ compounds promising as refrigerants are enhanced by a partial substitution of Ce for La. The values of the isothermal magnetic entropy change ΔS_m and the adiabatic temperature change ΔT_ud for La _1-zCe_z(Fe_0.90Si_0.10]₁₃ compound with z = 0.1 are -32 J/kgK and 12.8K, respectively, just above the Curie temperature in the magnetic field change from 0 to 4T. Such large magnetocaloric effects can also be obtained in the vicinity of room temperature by hydrogen absorption. Annealing at 1373 K for 20 days makes it possible to substitute up to z = 0.2.

Original language	English
Pages (from-to)	3228-3231
Number of pages	4
Journal	Materials Transactions
Volume	45
Issue number	11
DOIs	https://doi.org/10.2320/matertrans.45.3228
Publication status	Published - 2004 Nov

Keywords

Hydride
Itinerant-electron metamagnetic transition
Magnetic refrigerant
Magnetic refrigeration

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.2320/matertrans.45.3228

Cite this

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abstract = "Magnetocaloric effects due to the itinerant-electron metamagnetic transition for La(Fe0.90Si0.10)13 compounds promising as refrigerants are enhanced by a partial substitution of Ce for La. The values of the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTud for La 1-zCez(Fe0.90Si0.10]13 compound with z = 0.1 are -32 J/kgK and 12.8K, respectively, just above the Curie temperature in the magnetic field change from 0 to 4T. Such large magnetocaloric effects can also be obtained in the vicinity of room temperature by hydrogen absorption. Annealing at 1373 K for 20 days makes it possible to substitute up to z = 0.2.",

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T1 - Enhancements of magnetocaloric effects in La(Fe0.90Si 0.10)13 and its hydride by partial substitution of Ce for La

AU - Fujieda, Shun

AU - Fujita, Asaya

AU - Fukamichi, Kazuaki

PY - 2004/11

Y1 - 2004/11

N2 - Magnetocaloric effects due to the itinerant-electron metamagnetic transition for La(Fe0.90Si0.10)13 compounds promising as refrigerants are enhanced by a partial substitution of Ce for La. The values of the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTud for La 1-zCez(Fe0.90Si0.10]13 compound with z = 0.1 are -32 J/kgK and 12.8K, respectively, just above the Curie temperature in the magnetic field change from 0 to 4T. Such large magnetocaloric effects can also be obtained in the vicinity of room temperature by hydrogen absorption. Annealing at 1373 K for 20 days makes it possible to substitute up to z = 0.2.

AB - Magnetocaloric effects due to the itinerant-electron metamagnetic transition for La(Fe0.90Si0.10)13 compounds promising as refrigerants are enhanced by a partial substitution of Ce for La. The values of the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTud for La 1-zCez(Fe0.90Si0.10]13 compound with z = 0.1 are -32 J/kgK and 12.8K, respectively, just above the Curie temperature in the magnetic field change from 0 to 4T. Such large magnetocaloric effects can also be obtained in the vicinity of room temperature by hydrogen absorption. Annealing at 1373 K for 20 days makes it possible to substitute up to z = 0.2.

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KW - Itinerant-electron metamagnetic transition

KW - Magnetic refrigerant

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