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The Pr2Fe17 compound is a potential candidate for low cost magnetocaloric materials with a significant relative cooling power (RCP) around room temperature (280K). In this work, we present the results of the substitution of dysprosium for praseodymium and of the substitution of aluminum for iron in Pr2Fe17. The polycrystalline Pr2Fe17, Pr1.75Dy0.25Fe17 and Pr2Fe16.75Al0.25 were prepared by arc melting...