Abstract Magnetic properties and magnetocaloric effect in TbCo$_{2 - x}$Fe$_{x}$ compounds are studied by DC magnetic measurement. With increasing content of Fe, the entropy changes decrease slightly, though the Curie temperature is tuned from 231 K ($x=0$) to 303 K ($x=0.1$). Magnetic entropies of TbCo$_{2}$ compound are calculated by using mean field approximation (MFA). Results estimated by using Maxwell relation are consistent with that of MFA calculation. It is shown that the entropy changes are mainly derived from the magnetic entropy changes. The lattice has almost no contribution to the entropy change in the vicinity of phase transition.
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the National Natural Science Foundation of China
(Grant No~50571112) and the National Basic Research Program of China (Grant
No~2006CB601101).
Cite this article:
Zou Jun-Ding(邹君鼎), Shen Bao-Gen(沈保根), and Sun Ji-Rong(孙继荣) Magnetic properties and magnetocaloric effect in TbCo2-xFex compounds 2007 Chinese Physics 16 3843
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