The magnetocaloric effects (MCEs) in La1-z Prz (Fe0.88 Si0.12) 13 and their hydrides have been investigated. The values of the MCEs due to the itinerant-electron metamagnetic transition are enhanced significantly by a partial substitution of Pr for La. Furthermore, the Curie temperature TC of the La1-z Prz (Fe0.88 Si0.12) 13 is controlled by adjusting the absorption content of hydrogen in a similar manner as La (Fe0.88 Si0.12) 13. For the compounds having almost the same TC, the MCEs in the La1-z Prz (Fe0.88 Si0.12) 13 Hy are larger than those in La (Fe0.88 Si0.12) 13 Hy. To conclude, the La1-z Prz (Fe0.88 Si0.12) 13 and their hydrides are more useful for magnetic refrigerants working in a wide temperature range covering room temperature.
ASJC Scopus subject areas
- Physics and Astronomy(all)