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.
Original language | English |
---|---|
Pages (from-to) | 3228-3231 |
Number of pages | 4 |
Journal | Materials Transactions |
Volume | 45 |
Issue number | 11 |
DOIs | |
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