摘要
The magnetocaloric effect in the colossal magnetoresistance material La_(2/3)Ca_(1/3)MnO_3 was studied. From the measurements of temperature dependence of magnetization in various magnetic fields, the large magnetic entropy change associated with the ferromagnetic-paramagnetic transition was discovered. This result suggests that perovskite manganites are suitable candidates as working substance in magnetic refrigeration technology.
The magnetocaloric effect in the colossal magnetoresistance material La_(2/3)Ca_(1/3)MnO_3 was studied. From the measurements of temperature dependence of magnetization in various magnetic fields, the large magnetic entropy change associated with the ferromagnetic-paramagnetic transition was discovered. This result suggests that perovskite manganites are suitable candidates as working substance in magnetic refrigeration technology.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina ( 1993 40 0 3 )andtheStateKeyProjectofFundamentalResearchofChina ( 0 0 1CB610 60 4)
