%0 Journal Article
%T Theoretical work on magnetocaloric effect in La0.75Ca0.25MnO3
%A Mahmoud Aly Hamad
%J Journal of Advanced Ceramics
%@ 2227-8508
%D 2012
%I 
%R 10.1007/s40145-012-0027-8
%X In this work, a phenomenological model is applied to describe the magnetocaloric effect for the La0.75Ca0.25MnO3 system near a second-order phase transition from a ferromagnetic to a paramagnetic state. Based on this model, it can predict the values of the magnetocaloric properties from calculation of magnetization as a function of temperature under different external magnetic fields. The magnetic entropy change reaches a peak of about 5.39 J/(kg¡¤K) at 257 K upon 4 T applied field variation. The ¦¤S M distribution is much more uniform than that of gadolinium, which is desirable for an Ericson-cycle magnetic refrigerator.
%K magnetocaloric effect
%K model
%K magnetic entropy change
%K heat capacity change
%K relative cooling power
%U http://link.springer.com/article/10.1007/s40145-012-0027-8