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研究了Ｃｅ２－ ｘＤｙ ｘＦｅ１７（ ｘ ＝ ０－０ ，０－３ ，０－５ ，１－０） 系列合金在７７ —２９８ Ｋ 温区范围磁熵变，发现Ｃｅ２ － ｘＤｙｘＦｅ１７ 系列合金有较大的磁熵变，居里温度可通过离子替代而改变，是一种可供选择的室温磁致冷材料．
The magnetic entropy change of Ce2- xDyxFe17 (x = 0-0, 0-3, 0-5, 1-0) series alloys in the temperature range of 77-298 K was investigated. It was found that the Ce2-xDyxFe17 alloy has a large magnetic Entropy change, Curie temperature can be changed by ion substitution, is an alternative room temperature magnetic refrigeration material.