Abstract
(La0.5Ce0.5)2Co7 and (Ce0.65Pr0.35)2Co7 compounds for magnetic refrigeration were studied by X-ray diffraction, ac susceptibility and isothermal magnetization measurements. X-ray powder diffraction shows that all the compounds have hexagonal Ce2Ni7-type structure. The Curie temperatures (T C ) are 258 K and 222 K for (La0.5Ce0.5)2Co7 and (Ce0.65Pr0.35)2Co7 compounds, respectively. High coercivities (H C ) of about 1.74 and 6.61 kOe at 5 K with a smooth demagnetization curves were obtained for the (La0.5Ce0.5)2Co7 and (Ce0.65Pr0.35)2Co7 compounds, respectively. For an applied field change from 0 to 50 kOe, the maximum (-ΔS M) for (La0.5Ce0.5)2Co7 and (Ce0.65Pr0.35)2Co7 compounds are 0.52 and 0.67 J/(kg K), respectively.
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Zhong, X., Liu, Z., Min, J. et al. Magnetic properties and magnetic entropy changes of MRE2Co7 compounds. Sci. China Phys. Mech. Astron. 58, 597501 (2015). https://doi.org/10.1007/s11433-015-5656-9
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DOI: https://doi.org/10.1007/s11433-015-5656-9