Large magnetocaloric effect in La(FexSi1-x) 13 itinerant-electron metamagnetic compounds

S. Fujieda; Asaya Fujita; K. Fukamichi

doi:10.1063/1.1498148

Large magnetocaloric effect in La(Fe_xSi_1-x) ₁₃ itinerant-electron metamagnetic compounds

S. Fujieda, Asaya Fujita, K. Fukamichi

Division of Inorganic Material Research

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

436 Citations (Scopus)

Abstract

The magnetocaloric effect (MCE) originated from the itinerant-electron metamagnetic transition for La(Fe_xSi_1-x)₁₃ compounds has been investigated. With increasing Fe concentration, the MCE is enhanced and both the isothermal magnetic entropy change ΔS_m and the adiabatic temperature change ΔT_ad for the compound with x=0.90 are -28J/kgK and 8.1 K, respectively, by changing the magnetic field from 0 to 2 T. Similar large MCE values are achieved around room temperature by controlling the Curie temperature by means of hydrogen absorption. Consequently, La(Fe_xSi_1-x)₁₃ compounds are promising as magnetic refrigerant materials working in relatively low magnetic fields.

Original language	English
Pages (from-to)	1276-1278
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	7
DOIs	https://doi.org/10.1063/1.1498148
Publication status	Published - 2002 Aug 12

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The magnetocaloric effect (MCE) originated from the itinerant-electron metamagnetic transition for La(FexSi1-x)13 compounds has been investigated. With increasing Fe concentration, the MCE is enhanced and both the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTad for the compound with x=0.90 are -28J/kgK and 8.1 K, respectively, by changing the magnetic field from 0 to 2 T. Similar large MCE values are achieved around room temperature by controlling the Curie temperature by means of hydrogen absorption. Consequently, La(FexSi1-x)13 compounds are promising as magnetic refrigerant materials working in relatively low magnetic fields.",

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Y1 - 2002/8/12

N2 - The magnetocaloric effect (MCE) originated from the itinerant-electron metamagnetic transition for La(FexSi1-x)13 compounds has been investigated. With increasing Fe concentration, the MCE is enhanced and both the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTad for the compound with x=0.90 are -28J/kgK and 8.1 K, respectively, by changing the magnetic field from 0 to 2 T. Similar large MCE values are achieved around room temperature by controlling the Curie temperature by means of hydrogen absorption. Consequently, La(FexSi1-x)13 compounds are promising as magnetic refrigerant materials working in relatively low magnetic fields.

AB - The magnetocaloric effect (MCE) originated from the itinerant-electron metamagnetic transition for La(FexSi1-x)13 compounds has been investigated. With increasing Fe concentration, the MCE is enhanced and both the isothermal magnetic entropy change ΔSm and the adiabatic temperature change ΔTad for the compound with x=0.90 are -28J/kgK and 8.1 K, respectively, by changing the magnetic field from 0 to 2 T. Similar large MCE values are achieved around room temperature by controlling the Curie temperature by means of hydrogen absorption. Consequently, La(FexSi1-x)13 compounds are promising as magnetic refrigerant materials working in relatively low magnetic fields.

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Large magnetocaloric effect in La(Fe_xSi_1-x) ₁₃ itinerant-electron metamagnetic compounds

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