TY - GEN
T1 - Application of large magnetocaloric effects in itinerant-electron metamagnets to cooling systems
AU - Fukamichi, K.
AU - Fujita, Asaya
AU - Fujieda, S.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - The La(FexSi1-x)13 compounds exhibit large magnetocaloric effects (MCEs) due to the itinerant-electron metamagnetic (IEM) transition. By hydrogen absorption, the Curie temperature TC increases up to room temperature with retaining the IEM transition. The La(Fe0.90Si0.10)13H1.1 compound indicates a large isothermal magnetic entropy change of ΔSm = - 28 J/kg K at 287 K in the magnetic field change from 0 to 2 T (ΔB = 2 T). In addition, the MCEs are enhanced by partial substitution of Ce for La. The value of TCfor La(FexSi1-x)13 is decreased by partial substitution of Mn for Fe, keeping excellent MCEs. Consequently, the La(FexSi1-x)13 and their modified compounds are promising as magnetic refrigerants working at a wide range of temperature covering room temperature.
AB - The La(FexSi1-x)13 compounds exhibit large magnetocaloric effects (MCEs) due to the itinerant-electron metamagnetic (IEM) transition. By hydrogen absorption, the Curie temperature TC increases up to room temperature with retaining the IEM transition. The La(Fe0.90Si0.10)13H1.1 compound indicates a large isothermal magnetic entropy change of ΔSm = - 28 J/kg K at 287 K in the magnetic field change from 0 to 2 T (ΔB = 2 T). In addition, the MCEs are enhanced by partial substitution of Ce for La. The value of TCfor La(FexSi1-x)13 is decreased by partial substitution of Mn for Fe, keeping excellent MCEs. Consequently, the La(FexSi1-x)13 and their modified compounds are promising as magnetic refrigerants working at a wide range of temperature covering room temperature.
KW - Curie temperature
KW - Itinerant-electron metamagnetic transition
KW - Magnetic refrigerant
KW - Magnetic refrigeration
KW - Magnetocaloric effects
KW - Thermal-induced first-order magnetic transition
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U2 - 10.4028/0-87849-996-2.137
DO - 10.4028/0-87849-996-2.137
M3 - Conference contribution
AN - SCOPUS:35748959946
SN - 0878499962
SN - 9780878499960
T3 - Materials Science Forum
SP - 137
EP - 144
BT - Advanced Structural and Functional Materials Design - Proceedings of the International Symposium on Advanced Structural and Functional Materials Design, 2004
PB - Trans Tech Publications Ltd
T2 - International Symposium on Advanced Structural and Functional Materials Design, 2004
Y2 - 10 November 2004 through 12 November 2004
ER -