Magnetocaloric effect in the La0.8Ce0.2Fe11.4−xCoxSi1.6 compounds |
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| Authors: | G.F. Wang, L. Song, F.A. Li, Z.Q. Ou, O. Tegus, E. Brü ck,K.H.J. Buschow |
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| Affiliation: | aKey Laboratory for Physics and Chemistry of Function Materials, Inner Mongolia Normal University, Hohhot 010022, China;bVan der Waals-Zeeman Instituut, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands |
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| Abstract: | The effects of substitution of Co for Fe on the magnetic and magnetocaloric properties of La0.8Ce0.2Fe11.4−xCoxSi1.6 (0, 0.2, 0.4, 0.6, 0.8 and 1.0) compounds have been investigated. X-ray diffraction shows that all compounds crystallize in the NaZn13-type structure. Magnetic measurements show that the Curie temperature (TC) can be tuned between 184 and 294 K by changing the Co content from 0 to 1. A field-induced methamagnetic transition occurs in samples with x=0, 0.2 and 0.4. The magnetic entropy changes of the compounds have been determined from the isothermal magnetization measurements by using the Maxwell relation. |
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| Keywords: | Magnetization process Magnetic entropy First-order transition Magnetic refrigeration |
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